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rtl.h (emit_clobber, [...]): Declare. 

gcc/
	* rtl.h (emit_clobber, gen_clobber, emit_use, gen_use): Declare.
	* emit-rtl.c (emit_clobber, gen_clobber, emit_use, gen_use): New
	functions.  Do not emit uses and clobbers of CONCATs; individually
	use and clobber their operands.
	* builtins.c (expand_builtin_setjmp_receiver): Use emit_clobber,
	gen_clobber, emit_use and gen_use.
	(expand_builtin_longjmp, expand_builtin_nonlocal_goto): Likewise.
	(expand_builtin_return): Likewise.
	* cfgbuild.c (count_basic_blocks): Likewise.
	* cfgrtl.c (rtl_flow_call_edges_add): Likewise.
	* explow.c (emit_stack_restore): Likewise.
	* expmed.c (extract_bit_field_1): Likewise.
	* expr.c (convert_move, emit_move_complex_parts): Likewise.
	(emit_move_multi_word, store_constructor): Likewise.
	* function.c (do_clobber_return_reg, do_use_return_reg): Likewise.
	(thread_prologue_and_epilogue_insns): Likewise.
	* lower-subreg.c (resolve_simple_move): Likewise.
	* optabs.c (widen_operand, expand_binop): Likewise.
	(expand_doubleword_bswap, emit_no_conflict_block): Likewise.
	* reload.c (find_reloads): Likewise.
	* reload1.c (eliminate_regs_in_insn): Likewise.
	* stmt.c (expand_nl_goto_receiver): Likewise.
	* config/alpha/alpha.md (builtin_longjmp): Likewise.
	* config/arc/arc.md (*movdi_insn, *movdf_insn): Likewise.
	* config/arm/arm.c (arm_load_pic_register): Likewise.
	(thumb1_expand_epilogue, thumb_set_return_address): Likewise.
	* config/arm/arm.md (untyped_return): Likewise.
	* config/arm/linux-elf.h (PROFILE_HOOK): Likewise.
	* config/avr/avr.c (expand_prologue): Likewise.
	* config/bfin/bfin.c (do_unlink): Likewise.
	* config/bfin/bfin.md (<optab>di3, adddi3, subdi3): Likewise.
	* config/cris/cris.c (cris_expand_prologue): Likewise.
	* config/darwin.c (machopic_indirect_data_reference): Likewise.
	(machopic_legitimize_pic_address): Likewise.
	* config/frv/frv.c (frv_frame_access, frv_expand_epilogue): Likewise.
	(frv_ifcvt_modify_insn, frv_expand_mdpackh_builtin): Likewise.
	* config/i386/i386.c (ix86_expand_vector_move_misalign): Likewise.
	(ix86_expand_convert_uns_didf_sse): Likewise.
	(ix86_expand_vector_init_general): Likewise.
	* config/ia64/ia64.md (eh_epilogue): Likewise.
	* config/iq2000/iq2000.c (iq2000_expand_epilogue): Likewise.
	* config/m32c/m32c.c (m32c_emit_eh_epilogue): Likewise.
	* config/m32r/m32r.c (m32r_reload_lr): Likewise.
	(config/iq2000/iq2000.c): Likewise.
	* config/mips/mips.md (fixuns_truncdfsi2): Likewise.
	(fixuns_truncdfdi2, fixuns_truncsfsi2, fixuns_truncsfdi2): Likewise.
	(builtin_longjmp): Likewise.
	* config/mn10300/mn10300.md (call, call_value): Likewise.
	* config/pa/pa.md (nonlocal_goto, nonlocal_longjmp): Likewise.
	* config/pdp11/pdp11.md (abshi2): Likewise.
	* config/rs6000/rs6000.c (rs6000_emit_move): Likewise.
	* config/s390/s390.c (s390_emit_prologue): Likewise.
	* config/s390/s390.md (movmem_long, setmem_long): Likewise.
	(cmpmem_long, extendsidi2, zero_extendsidi2, udivmoddi4): Likewise.
	(builtin_setjmp_receiver, restore_stack_nonlocal): Likewise.
	* config/sh/sh.c (prepare_move_operands): Likewise.
	(output_stack_adjust, sh_expand_epilogue): Likewise.
	(sh_set_return_address, sh_expand_t_scc): Likewise.
	* config/sparc/sparc.c (load_pic_register): Likewise.
	* config/sparc/sparc.md (untyped_return, nonlocal_goto): Likewise.
	* config/spu/spu.c (spu_expand_epilogue): Likewise.
	* config/v850/v850.c (expand_epilogue): Likewise.

From-SVN: r136251
This commit is contained in:
Richard Sandiford 2008-06-01 09:47:28 +00:00 committed by Richard Sandiford
parent d2d586f929
commit c41c1387d3
43 changed files with 243 additions and 148 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

65
gcc/ChangeLog
View File

@ -1,3 +1,68 @@
2008-06-01 Richard Sandiford <rdsandiford@googlemail.com>
* rtl.h (emit_clobber, gen_clobber, emit_use, gen_use): Declare.
* emit-rtl.c (emit_clobber, gen_clobber, emit_use, gen_use): New
functions. Do not emit uses and clobbers of CONCATs; individually
use and clobber their operands.
* builtins.c (expand_builtin_setjmp_receiver): Use emit_clobber,
gen_clobber, emit_use and gen_use.
(expand_builtin_longjmp, expand_builtin_nonlocal_goto): Likewise.
(expand_builtin_return): Likewise.
* cfgbuild.c (count_basic_blocks): Likewise.
* cfgrtl.c (rtl_flow_call_edges_add): Likewise.
* explow.c (emit_stack_restore): Likewise.
* expmed.c (extract_bit_field_1): Likewise.
* expr.c (convert_move, emit_move_complex_parts): Likewise.
(emit_move_multi_word, store_constructor): Likewise.
* function.c (do_clobber_return_reg, do_use_return_reg): Likewise.
(thread_prologue_and_epilogue_insns): Likewise.
* lower-subreg.c (resolve_simple_move): Likewise.
* optabs.c (widen_operand, expand_binop): Likewise.
(expand_doubleword_bswap, emit_no_conflict_block): Likewise.
* reload.c (find_reloads): Likewise.
* reload1.c (eliminate_regs_in_insn): Likewise.
* stmt.c (expand_nl_goto_receiver): Likewise.
* config/alpha/alpha.md (builtin_longjmp): Likewise.
* config/arc/arc.md (*movdi_insn, *movdf_insn): Likewise.
* config/arm/arm.c (arm_load_pic_register): Likewise.
(thumb1_expand_epilogue, thumb_set_return_address): Likewise.
* config/arm/arm.md (untyped_return): Likewise.
* config/arm/linux-elf.h (PROFILE_HOOK): Likewise.
* config/avr/avr.c (expand_prologue): Likewise.
* config/bfin/bfin.c (do_unlink): Likewise.
* config/bfin/bfin.md (<optab>di3, adddi3, subdi3): Likewise.
* config/cris/cris.c (cris_expand_prologue): Likewise.
* config/darwin.c (machopic_indirect_data_reference): Likewise.
(machopic_legitimize_pic_address): Likewise.
* config/frv/frv.c (frv_frame_access, frv_expand_epilogue): Likewise.
(frv_ifcvt_modify_insn, frv_expand_mdpackh_builtin): Likewise.
* config/i386/i386.c (ix86_expand_vector_move_misalign): Likewise.
(ix86_expand_convert_uns_didf_sse): Likewise.
(ix86_expand_vector_init_general): Likewise.
* config/ia64/ia64.md (eh_epilogue): Likewise.
* config/iq2000/iq2000.c (iq2000_expand_epilogue): Likewise.
* config/m32c/m32c.c (m32c_emit_eh_epilogue): Likewise.
* config/m32r/m32r.c (m32r_reload_lr): Likewise.
(config/iq2000/iq2000.c): Likewise.
* config/mips/mips.md (fixuns_truncdfsi2): Likewise.
(fixuns_truncdfdi2, fixuns_truncsfsi2, fixuns_truncsfdi2): Likewise.
(builtin_longjmp): Likewise.
* config/mn10300/mn10300.md (call, call_value): Likewise.
* config/pa/pa.md (nonlocal_goto, nonlocal_longjmp): Likewise.
* config/pdp11/pdp11.md (abshi2): Likewise.
* config/rs6000/rs6000.c (rs6000_emit_move): Likewise.
* config/s390/s390.c (s390_emit_prologue): Likewise.
* config/s390/s390.md (movmem_long, setmem_long): Likewise.
(cmpmem_long, extendsidi2, zero_extendsidi2, udivmoddi4): Likewise.
(builtin_setjmp_receiver, restore_stack_nonlocal): Likewise.
* config/sh/sh.c (prepare_move_operands): Likewise.
(output_stack_adjust, sh_expand_epilogue): Likewise.
(sh_set_return_address, sh_expand_t_scc): Likewise.
* config/sparc/sparc.c (load_pic_register): Likewise.
* config/sparc/sparc.md (untyped_return, nonlocal_goto): Likewise.
* config/spu/spu.c (spu_expand_epilogue): Likewise.
* config/v850/v850.c (expand_epilogue): Likewise.
2008-05-31 Anatoly Sokolov <aesok@post.ru>
* config/avr/avr.md (UNSPECV_WRITE_SP_IRQ_ON): New constants.

35
gcc/builtins.c
View File

@ -708,11 +708,11 @@ expand_builtin_setjmp_receiver (rtx receiver_label ATTRIBUTE_UNUSED)
{
/* Clobber the FP when we get here, so we have to make sure it's
marked as used by this function. */
emit_insn (gen_rtx_USE (VOIDmode, hard_frame_pointer_rtx));
emit_use (hard_frame_pointer_rtx);
/* Mark the static chain as clobbered here so life information
doesn't get messed up for it. */
emit_insn (gen_rtx_CLOBBER (VOIDmode, static_chain_rtx));
emit_clobber (static_chain_rtx);
/* Now put in the code to restore the frame pointer, and argument
pointer, if needed. */
@ -723,7 +723,7 @@ expand_builtin_setjmp_receiver (rtx receiver_label ATTRIBUTE_UNUSED)
emit_move_insn (virtual_stack_vars_rtx, hard_frame_pointer_rtx);
/* This might change the hard frame pointer in ways that aren't
apparent to early optimization passes, so force a clobber. */
emit_insn (gen_rtx_CLOBBER (VOIDmode, hard_frame_pointer_rtx));
emit_clobber (hard_frame_pointer_rtx);
}
#if ARG_POINTER_REGNUM != HARD_FRAME_POINTER_REGNUM
@ -822,18 +822,14 @@ expand_builtin_longjmp (rtx buf_addr, rtx value)
{
lab = copy_to_reg (lab);
emit_insn (gen_rtx_CLOBBER (VOIDmode,
gen_rtx_MEM (BLKmode,
gen_rtx_SCRATCH (VOIDmode))));
emit_insn (gen_rtx_CLOBBER (VOIDmode,
gen_rtx_MEM (BLKmode,
hard_frame_pointer_rtx)));
emit_clobber (gen_rtx_MEM (BLKmode, gen_rtx_SCRATCH (VOIDmode)));
emit_clobber (gen_rtx_MEM (BLKmode, hard_frame_pointer_rtx));
emit_move_insn (hard_frame_pointer_rtx, fp);
emit_stack_restore (SAVE_NONLOCAL, stack, NULL_RTX);
emit_insn (gen_rtx_USE (VOIDmode, hard_frame_pointer_rtx));
emit_insn (gen_rtx_USE (VOIDmode, stack_pointer_rtx));
emit_use (hard_frame_pointer_rtx);
emit_use (stack_pointer_rtx);
emit_indirect_jump (lab);
}
}
@ -892,13 +888,8 @@ expand_builtin_nonlocal_goto (tree exp)
{
r_label = copy_to_reg (r_label);
emit_insn (gen_rtx_CLOBBER (VOIDmode,
gen_rtx_MEM (BLKmode,
gen_rtx_SCRATCH (VOIDmode))));
emit_insn (gen_rtx_CLOBBER (VOIDmode,
gen_rtx_MEM (BLKmode,
hard_frame_pointer_rtx)));
emit_clobber (gen_rtx_MEM (BLKmode, gen_rtx_SCRATCH (VOIDmode)));
emit_clobber (gen_rtx_MEM (BLKmode, hard_frame_pointer_rtx));
/* Restore frame pointer for containing function.
This sets the actual hard register used for the frame pointer
@ -910,8 +901,8 @@ expand_builtin_nonlocal_goto (tree exp)
/* USE of hard_frame_pointer_rtx added for consistency;
not clear if really needed. */
emit_insn (gen_rtx_USE (VOIDmode, hard_frame_pointer_rtx));
emit_insn (gen_rtx_USE (VOIDmode, stack_pointer_rtx));
emit_use (hard_frame_pointer_rtx);
emit_use (stack_pointer_rtx);
/* If the architecture is using a GP register, we must
conservatively assume that the target function makes use of it.
@ -924,7 +915,7 @@ expand_builtin_nonlocal_goto (tree exp)
a no-op if the GP register is a global invariant.) */
if ((unsigned) PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM
&& fixed_regs[PIC_OFFSET_TABLE_REGNUM])
emit_insn (gen_rtx_USE (VOIDmode, pic_offset_table_rtx));
emit_use (pic_offset_table_rtx);
emit_indirect_jump (r_label);
}
@ -1602,7 +1593,7 @@ expand_builtin_return (rtx result)
emit_move_insn (reg, adjust_address (result, mode, size));
push_to_sequence (call_fusage);
emit_insn (gen_rtx_USE (VOIDmode, reg));
emit_use (reg);
call_fusage = get_insns ();
end_sequence ();
size += GET_MODE_SIZE (mode);

2
gcc/cfgbuild.c
View File

@ -170,7 +170,7 @@ count_basic_blocks (const_rtx f)
check for the edge case of do-nothing functions with no basic blocks. */
if (count == NUM_FIXED_BLOCKS)
{
emit_insn (gen_rtx_USE (VOIDmode, const0_rtx));
emit_use (const0_rtx);
count = NUM_FIXED_BLOCKS + 1;
}

2
gcc/cfgrtl.c
View File

@ -2809,7 +2809,7 @@ rtl_flow_call_edges_add (sbitmap blocks)
e = find_edge (bb, EXIT_BLOCK_PTR);
if (e)
{
insert_insn_on_edge (gen_rtx_USE (VOIDmode, const0_rtx), e);
insert_insn_on_edge (gen_use (const0_rtx), e);
commit_edge_insertions ();
}
}

4
gcc/config/alpha/alpha.md
View File

@ -6948,8 +6948,8 @@
emit_move_insn (hard_frame_pointer_rtx, fp);
emit_move_insn (pv, lab);
emit_stack_restore (SAVE_NONLOCAL, stack, NULL_RTX);
emit_insn (gen_rtx_USE (VOIDmode, hard_frame_pointer_rtx));
emit_insn (gen_rtx_USE (VOIDmode, stack_pointer_rtx));
emit_use (hard_frame_pointer_rtx);
emit_use (stack_pointer_rtx);
/* Load the label we are jumping through into $27 so that we know
where to look for it when we get back to setjmp's function for

4
gcc/config/arc/arc.md
View File

@ -313,7 +313,7 @@
;{
; /* Flow doesn't understand that this is effectively a DFmode move.
; It doesn't know that all of `operands[0]' is set. */
; emit_insn (gen_rtx_CLOBBER (VOIDmode, operands[0]));
; emit_clobber (operands[0]);
;
; /* Emit insns that movsi_insn can handle. */
; emit_insn (gen_movsi (operand_subword (operands[0], 0, 0, DImode),
@ -406,7 +406,7 @@
;{
; /* Flow doesn't understand that this is effectively a DFmode move.
; It doesn't know that all of `operands[0]' is set. */
; emit_insn (gen_rtx_CLOBBER (VOIDmode, operands[0]));
; emit_clobber (operands[0]);
;
; /* Emit insns that movsi_insn can handle. */
; emit_insn (gen_movsi (operand_subword (operands[0], 0, 0, DFmode),

8
gcc/config/arm/arm.c
View File

@ -3693,7 +3693,7 @@ arm_load_pic_register (unsigned long saved_regs ATTRIBUTE_UNUSED)
/* Need to emit this whether or not we obey regdecls,
since setjmp/longjmp can cause life info to screw up. */
emit_insn (gen_rtx_USE (VOIDmode, pic_reg));
emit_use (pic_reg);
}
@ -17064,10 +17064,10 @@ thumb1_expand_epilogue (void)
so that flow2 will get register lifetimes correct. */
for (regno = 0; regno < 13; regno++)
if (df_regs_ever_live_p (regno) && !call_used_regs[regno])
emit_insn (gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (SImode, regno)));
emit_clobber (gen_rtx_REG (SImode, regno));
if (! df_regs_ever_live_p (LR_REGNUM))
emit_insn (gen_rtx_USE (VOIDmode, gen_rtx_REG (SImode, LR_REGNUM)));
emit_use (gen_rtx_REG (SImode, LR_REGNUM));
}
static void
@ -18329,7 +18329,7 @@ thumb_set_return_address (rtx source, rtx scratch)
rtx addr;
unsigned long mask;
emit_insn (gen_rtx_USE (VOIDmode, source));
emit_use (source);
offsets = arm_get_frame_offsets ();
mask = offsets->saved_regs_mask;

3
gcc/config/arm/arm.md
View File

@ -8785,8 +8785,7 @@
/* Emit USE insns before the return. */
for (i = 0; i < XVECLEN (operands[1], 0); i++)
emit_insn (gen_rtx_USE (VOIDmode,
SET_DEST (XVECEXP (operands[1], 0, i))));
emit_use (SET_DEST (XVECEXP (operands[1], 0, i)));
/* Construct the return. */
expand_naked_return ();

2
gcc/config/arm/linux-elf.h
View File

@ -111,7 +111,7 @@
/* The GNU/Linux profiler clobbers the link register. Make sure the
prologue knows to save it. */
#define PROFILE_HOOK(X) \
emit_insn (gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (SImode, LR_REGNUM)))
emit_clobber (gen_rtx_REG (SImode, LR_REGNUM))
/* The GNU/Linux profiler needs a frame pointer. */
#define SUBTARGET_FRAME_POINTER_REQUIRED crtl->profile

2
gcc/config/avr/avr.c
View File

@ -680,7 +680,7 @@ expand_prologue (void)
RTX_FRAME_RELATED_P (insn) = 1;
/* Prevent any attempt to delete the setting of ZERO_REG! */
emit_insn (gen_rtx_USE (VOIDmode, zero_reg_rtx));
emit_use (zero_reg_rtx);
}
if (minimize && (frame_pointer_needed
|| (AVR_2_BYTE_PC && live_seq > 6)

4
gcc/config/bfin/bfin.c
View File

@ -1009,12 +1009,12 @@ do_unlink (rtx spreg, HOST_WIDE_INT frame_size, bool all, int epilogue_p)
{
rtx fpreg = gen_rtx_REG (Pmode, REG_FP);
emit_move_insn (fpreg, postinc);
emit_insn (gen_rtx_USE (VOIDmode, fpreg));
emit_use (fpreg);
}
if (! current_function_is_leaf)
{
emit_move_insn (bfin_rets_rtx, postinc);
emit_insn (gen_rtx_USE (VOIDmode, bfin_rets_rtx));
emit_use (bfin_rets_rtx);
}
}
}

6
gcc/config/bfin/bfin.md
View File

@ -904,7 +904,7 @@
enum insn_code icode = CODE_FOR_<optab>si3;
if (!reg_overlap_mentioned_p (operands[0], operands[1])
&& !reg_overlap_mentioned_p (operands[0], operands[2]))
emit_insn (gen_rtx_CLOBBER (VOIDmode, operands[0]));
emit_clobber (operands[0]);
split_di (operands, 3, lo_half, hi_half);
if (!(*insn_data[icode].operand[2].predicate) (lo_half[2], SImode))
lo_half[2] = force_reg (SImode, lo_half[2]);
@ -1022,7 +1022,7 @@
xops[4] = force_reg (SImode, xops[4]);
if (!reg_overlap_mentioned_p (operands[0], operands[1])
&& !reg_overlap_mentioned_p (operands[0], operands[2]))
emit_insn (gen_rtx_CLOBBER (VOIDmode, operands[0]));
emit_clobber (operands[0]);
emit_insn (gen_add_with_carry (xops[0], xops[2], xops[4], xops[7]));
emit_insn (gen_movbisi (xops[6], xops[7]));
if (!register_operand (xops[5], SImode)
@ -1055,7 +1055,7 @@
xops[7] = gen_rtx_REG (BImode, REG_CC);
if (!reg_overlap_mentioned_p (operands[0], operands[1])
&& !reg_overlap_mentioned_p (operands[0], operands[2]))
emit_insn (gen_rtx_CLOBBER (VOIDmode, operands[0]));
emit_clobber (operands[0]);
emit_insn (gen_sub_with_carry (xops[0], xops[2], xops[4], xops[7]));
emit_insn (gen_notbi (xops[7], xops[7]));
emit_insn (gen_movbisi (xops[6], xops[7]));

2
gcc/config/cris/cris.c
View File

@ -3002,7 +3002,7 @@ cris_expand_prologue (void)
the GOT register load as maybe-dead. To see this, remove the
line below and try libsupc++/vec.cc or a trivial
"static void y (); void x () {try {y ();} catch (...) {}}". */
emit_insn (gen_rtx_USE (VOIDmode, pic_offset_table_rtx));
emit_use (pic_offset_table_rtx);
}
if (cris_max_stackframe && framesize > cris_max_stackframe)

13
gcc/config/darwin.c
View File

@ -555,7 +555,7 @@ machopic_indirect_data_reference (rtx orig, rtx reg)
emit_insn (gen_rtx_SET (VOIDmode, reg,
gen_rtx_LO_SUM (Pmode, reg,
copy_rtx (offset))));
emit_insn (gen_rtx_USE (VOIDmode, pic_offset_table_rtx));
emit_use (pic_offset_table_rtx);
orig = gen_rtx_PLUS (Pmode, pic_offset_table_rtx, reg);
#endif
@ -756,9 +756,7 @@ machopic_legitimize_pic_address (rtx orig, enum machine_mode mode, rtx reg)
pic_ref = reg;
#else
emit_insn (gen_rtx_USE (VOIDmode,
gen_rtx_REG (Pmode,
PIC_OFFSET_TABLE_REGNUM)));
emit_use (gen_rtx_REG (Pmode, PIC_OFFSET_TABLE_REGNUM));
emit_insn (gen_rtx_SET (VOIDmode, reg,
gen_rtx_HIGH (Pmode,
@ -782,9 +780,7 @@ machopic_legitimize_pic_address (rtx orig, enum machine_mode mode, rtx reg)
pic = reg;
}
#if 0
emit_insn (gen_rtx_USE (VOIDmode,
gen_rtx_REG (Pmode,
PIC_OFFSET_TABLE_REGNUM)));
emit_use (gen_rtx_REG (Pmode, PIC_OFFSET_TABLE_REGNUM));
#endif
if (reload_in_progress)
@ -857,8 +853,7 @@ machopic_legitimize_pic_address (rtx orig, enum machine_mode mode, rtx reg)
pic = reg;
}
#if 0
emit_insn (gen_rtx_USE (VOIDmode,
pic_offset_table_rtx));
emit_use (pic_offset_table_rtx);
#endif
if (reload_in_progress)
df_set_regs_ever_live (REGNO (pic), true);

12
gcc/config/frv/frv.c
View File

@ -1682,7 +1682,7 @@ frv_frame_access (frv_frame_accessor_t *accessor, rtx reg, int stack_offset)
}
else
emit_insn (gen_rtx_SET (VOIDmode, reg, mem));
emit_insn (gen_rtx_USE (VOIDmode, reg));
emit_use (reg);
}
else
{
@ -1946,7 +1946,7 @@ frv_expand_epilogue (bool emit_return)
if (frame_pointer_needed)
{
emit_insn (gen_rtx_SET (VOIDmode, fp, gen_rtx_MEM (Pmode, fp)));
emit_insn (gen_rtx_USE (VOIDmode, fp));
emit_use (fp);
}
/* Deallocate the stack frame. */
@ -1972,7 +1972,7 @@ frv_expand_epilogue (bool emit_return)
emit_move_insn (lr, return_addr);
}
emit_insn (gen_rtx_USE (VOIDmode, lr));
emit_use (lr);
}
}
@ -5999,7 +5999,7 @@ frv_ifcvt_modify_insn (ce_if_block_t *ce_info,
goto fail;
}
frv_ifcvt_add_insn (gen_rtx_USE (VOIDmode, dest), insn, FALSE);
frv_ifcvt_add_insn (gen_use (dest), insn, FALSE);
}
/* If we are just loading a constant created for a nested conditional
@ -9099,8 +9099,8 @@ frv_expand_mdpackh_builtin (tree call, rtx target)
/* The high half of each word is not explicitly initialized, so indicate
that the input operands are not live before this point. */
emit_insn (gen_rtx_CLOBBER (DImode, op0));
emit_insn (gen_rtx_CLOBBER (DImode, op1));
emit_clobber (op0);
emit_clobber (op1);
/* Move each argument into the low half of its associated input word. */
emit_move_insn (simplify_gen_subreg (HImode, op0, DImode, 2), arg1);

8
gcc/config/i386/i386.c
View File

@ -10549,7 +10549,7 @@ ix86_expand_vector_move_misalign (enum machine_mode mode, rtx operands[])
writing to the top half twice. */
if (TARGET_SSE_SPLIT_REGS)
{
emit_insn (gen_rtx_CLOBBER (VOIDmode, op0));
emit_clobber (op0);
zero = op0;
}
else
@ -10583,7 +10583,7 @@ ix86_expand_vector_move_misalign (enum machine_mode mode, rtx operands[])
if (TARGET_SSE_PARTIAL_REG_DEPENDENCY)
emit_move_insn (op0, CONST0_RTX (mode));
else
emit_insn (gen_rtx_CLOBBER (VOIDmode, op0));
emit_clobber (op0);
if (mode != V4SFmode)
op0 = gen_lowpart (V4SFmode, op0);
@ -10976,7 +10976,7 @@ ix86_expand_convert_uns_didf_sse (rtx target, rtx input)
emit_insn (gen_movdi_to_sse (int_xmm, input));
else if (TARGET_SSE_SPLIT_REGS)
{
emit_insn (gen_rtx_CLOBBER (VOIDmode, int_xmm));
emit_clobber (int_xmm);
emit_move_insn (gen_lowpart (DImode, int_xmm), input);
}
else
@ -24184,7 +24184,7 @@ ix86_expand_vector_init_general (bool mmx_ok, enum machine_mode mode,
else if (n_words == 2)
{
rtx tmp = gen_reg_rtx (mode);
emit_insn (gen_rtx_CLOBBER (VOIDmode, tmp));
emit_clobber (tmp);
emit_move_insn (gen_lowpart (word_mode, tmp), words[0]);
emit_move_insn (gen_highpart (word_mode, tmp), words[1]);
emit_move_insn (target, tmp);

4
gcc/config/ia64/ia64.md
View File

@ -6332,8 +6332,8 @@
emit_move_insn (sp, operands[2]);
operands[2] = sp;
}
emit_insn (gen_rtx_USE (VOIDmode, sp));
emit_insn (gen_rtx_USE (VOIDmode, bsp));
emit_use (sp);
emit_use (bsp);
cfun->machine->ia64_eh_epilogue_sp = sp;
cfun->machine->ia64_eh_epilogue_bsp = bsp;

3
gcc/config/iq2000/iq2000.c
View File

@ -2085,8 +2085,7 @@ iq2000_expand_epilogue (void)
/* Perform the additional bump for __throw. */
emit_move_insn (gen_rtx_REG (Pmode, HARD_FRAME_POINTER_REGNUM),
stack_pointer_rtx);
emit_insn (gen_rtx_USE (VOIDmode, gen_rtx_REG (Pmode,
HARD_FRAME_POINTER_REGNUM)));
emit_use (gen_rtx_REG (Pmode, HARD_FRAME_POINTER_REGNUM));
emit_jump_insn (gen_eh_return_internal ());
}
else

2
gcc/config/m32c/m32c.c
View File

@ -4079,7 +4079,7 @@ m32c_emit_eh_epilogue (rtx ret_addr)
(fudged), and return (fudged). This is actually easier to do in
assembler, so punt to libgcc. */
emit_jump_insn (gen_eh_epilogue (ret_addr, cfun->machine->eh_stack_adjust));
/* emit_insn (gen_rtx_CLOBBER (HImode, gen_rtx_REG (HImode, R0L_REGNO))); */
/* emit_clobber (gen_rtx_REG (HImode, R0L_REGNO)); */
emit_barrier ();
}

4
gcc/config/m32r/m32r.c
View File

@ -1349,7 +1349,7 @@ m32r_reload_lr (rtx sp, int size)
emit_insn (gen_movsi (lr, gen_frame_mem (Pmode, tmp)));
}
emit_insn (gen_rtx_USE (VOIDmode, lr));
emit_use (lr);
}
void
@ -1361,7 +1361,7 @@ m32r_load_pic_register (void)
/* Need to emit this whether or not we obey regdecls,
since setjmp/longjmp can cause life info to screw up. */
emit_insn (gen_rtx_USE (VOIDmode, pic_offset_table_rtx));
emit_use (pic_offset_table_rtx);
}
/* Expand the m32r prologue as a series of insns. */

14
gcc/config/mips/mips.md
View File

@ -2912,7 +2912,7 @@
/* Allow REG_NOTES to be set on last insn (labels don't have enough
fields, and can't be used for REG_NOTES anyway). */
emit_insn (gen_rtx_USE (VOIDmode, stack_pointer_rtx));
emit_use (stack_pointer_rtx);
DONE;
}
})
@ -2955,7 +2955,7 @@
/* Allow REG_NOTES to be set on last insn (labels don't have enough
fields, and can't be used for REG_NOTES anyway). */
emit_insn (gen_rtx_USE (VOIDmode, stack_pointer_rtx));
emit_use (stack_pointer_rtx);
DONE;
})
@ -2997,7 +2997,7 @@
/* Allow REG_NOTES to be set on last insn (labels don't have enough
fields, and can't be used for REG_NOTES anyway). */
emit_insn (gen_rtx_USE (VOIDmode, stack_pointer_rtx));
emit_use (stack_pointer_rtx);
DONE;
})
@ -3039,7 +3039,7 @@
/* Allow REG_NOTES to be set on last insn (labels don't have enough
fields, and can't be used for REG_NOTES anyway). */
emit_insn (gen_rtx_USE (VOIDmode, stack_pointer_rtx));
emit_use (stack_pointer_rtx);
DONE;
})
@ -5685,9 +5685,9 @@
mips_emit_move (pv, lab);
emit_stack_restore (SAVE_NONLOCAL, stack, NULL_RTX);
mips_emit_move (gp, gpv);
emit_insn (gen_rtx_USE (VOIDmode, hard_frame_pointer_rtx));
emit_insn (gen_rtx_USE (VOIDmode, stack_pointer_rtx));
emit_insn (gen_rtx_USE (VOIDmode, gp));
emit_use (hard_frame_pointer_rtx);
emit_use (stack_pointer_rtx);
emit_use (gp);
emit_indirect_jump (pv);
DONE;
})

4
gcc/config/mn10300/mn10300.md
View File

@ -1807,7 +1807,7 @@
shared library support for AM30 either, so we just assume
the linker is going to adjust all @PLT relocs to the
actual symbols. */
emit_insn (gen_rtx_USE (VOIDmode, pic_offset_table_rtx));
emit_use (pic_offset_table_rtx);
XEXP (operands[0], 0) = gen_sym2PLT (XEXP (operands[0], 0));
}
else
@ -1852,7 +1852,7 @@
shared library support for AM30 either, so we just assume
the linker is going to adjust all @PLT relocs to the
actual symbols. */
emit_insn (gen_rtx_USE (VOIDmode, pic_offset_table_rtx));
emit_use (pic_offset_table_rtx);
XEXP (operands[1], 0) = gen_sym2PLT (XEXP (operands[1], 0));
}
else

24
gcc/config/pa/pa.md
View File

@ -7432,12 +7432,8 @@
lab = copy_to_reg (lab);
emit_insn (gen_rtx_CLOBBER (VOIDmode,
gen_rtx_MEM (BLKmode,
gen_rtx_SCRATCH (VOIDmode))));
emit_insn (gen_rtx_CLOBBER (VOIDmode,
gen_rtx_MEM (BLKmode,
hard_frame_pointer_rtx)));
emit_clobber (gen_rtx_MEM (BLKmode, gen_rtx_SCRATCH (VOIDmode)));
emit_clobber (gen_rtx_MEM (BLKmode, hard_frame_pointer_rtx));
/* Restore the frame pointer. The virtual_stack_vars_rtx is saved
instead of the hard_frame_pointer_rtx in the save area. As a
@ -7449,8 +7445,8 @@
emit_stack_restore (SAVE_NONLOCAL, stack, NULL_RTX);
emit_insn (gen_rtx_USE (VOIDmode, hard_frame_pointer_rtx));
emit_insn (gen_rtx_USE (VOIDmode, stack_pointer_rtx));
emit_use (hard_frame_pointer_rtx);
emit_use (stack_pointer_rtx);
/* Nonlocal goto jumps are only used between functions in the same
translation unit. Thus, we can avoid the extra overhead of an
@ -8892,12 +8888,8 @@ add,l %2,%3,%3\;bv,n %%r0(%3)"
(POINTER_SIZE * 2) / BITS_PER_UNIT));
rtx pv = gen_rtx_REG (Pmode, 1);
emit_insn (gen_rtx_CLOBBER (VOIDmode,
gen_rtx_MEM (BLKmode,
gen_rtx_SCRATCH (VOIDmode))));
emit_insn (gen_rtx_CLOBBER (VOIDmode,
gen_rtx_MEM (BLKmode,
hard_frame_pointer_rtx)));
emit_clobber (gen_rtx_MEM (BLKmode, gen_rtx_SCRATCH (VOIDmode)));
emit_clobber (gen_rtx_MEM (BLKmode, hard_frame_pointer_rtx));
/* Restore the frame pointer. The virtual_stack_vars_rtx is saved
instead of the hard_frame_pointer_rtx in the save area. We need
@ -8913,8 +8905,8 @@ add,l %2,%3,%3\;bv,n %%r0(%3)"
/* This bit is the same as expand_builtin_longjmp. */
emit_stack_restore (SAVE_NONLOCAL, stack, NULL_RTX);
emit_insn (gen_rtx_USE (VOIDmode, hard_frame_pointer_rtx));
emit_insn (gen_rtx_USE (VOIDmode, stack_pointer_rtx));
emit_use (hard_frame_pointer_rtx);
emit_use (stack_pointer_rtx);
/* Load the label we are jumping through into r1 so that we know
where to look for it when we get back to setjmp's function for

2
gcc/config/pdp11/pdp11.md
View File

@ -1593,7 +1593,7 @@
;
; /* allow REG_NOTES to be set on last insn (labels don't have enough
; fields, and can't be used for REG_NOTES anyway). */
; emit_insn (gen_rtx_USE (VOIDmode, stack_pointer_rtx));
; emit_use (stack_pointer_rtx);
; DONE;
;}")

2
gcc/config/rs6000/rs6000.c
View File

@ -5000,7 +5000,7 @@ rs6000_emit_move (rtx dest, rtx source, enum machine_mode mode)
This should not be done for operands that contain LABEL_REFs.
For now, we just handle the obvious case. */
if (GET_CODE (operands[1]) != LABEL_REF)
emit_insn (gen_rtx_USE (VOIDmode, operands[1]));
emit_use (operands[1]);
#if TARGET_MACHO
/* Darwin uses a special PIC legitimizer. */

2
gcc/config/s390/s390.c
View File

@ -7797,7 +7797,7 @@ s390_emit_prologue (void)
if (TARGET_BACKCHAIN && flag_non_call_exceptions)
{
addr = gen_rtx_MEM (BLKmode, gen_rtx_SCRATCH (VOIDmode));
emit_insn (gen_rtx_CLOBBER (VOIDmode, addr));
emit_clobber (addr);
}
}

22
gcc/config/s390/s390.md
View File

@ -2494,11 +2494,11 @@
rtx len0 = gen_lowpart (Pmode, reg0);
rtx len1 = gen_lowpart (Pmode, reg1);
emit_insn (gen_rtx_CLOBBER (VOIDmode, reg0));
emit_clobber (reg0);
emit_move_insn (addr0, force_operand (XEXP (operands[0], 0), NULL_RTX));
emit_move_insn (len0, operands[2]);
emit_insn (gen_rtx_CLOBBER (VOIDmode, reg1));
emit_clobber (reg1);
emit_move_insn (addr1, force_operand (XEXP (operands[1], 0), NULL_RTX));
emit_move_insn (len1, operands[2]);
@ -2694,7 +2694,7 @@
rtx addr0 = gen_lowpart (Pmode, gen_highpart (word_mode, reg0));
rtx len0 = gen_lowpart (Pmode, reg0);
emit_insn (gen_rtx_CLOBBER (VOIDmode, reg0));
emit_clobber (reg0);
emit_move_insn (addr0, force_operand (XEXP (operands[0], 0), NULL_RTX));
emit_move_insn (len0, operands[1]);
@ -2850,11 +2850,11 @@
rtx len0 = gen_lowpart (Pmode, reg0);
rtx len1 = gen_lowpart (Pmode, reg1);
emit_insn (gen_rtx_CLOBBER (VOIDmode, reg0));
emit_clobber (reg0);
emit_move_insn (addr0, force_operand (XEXP (operands[0], 0), NULL_RTX));
emit_move_insn (len0, operands[2]);
emit_insn (gen_rtx_CLOBBER (VOIDmode, reg1));
emit_clobber (reg1);
emit_move_insn (addr1, force_operand (XEXP (operands[1], 0), NULL_RTX));
emit_move_insn (len1, operands[2]);
@ -3215,7 +3215,7 @@
{
if (!TARGET_64BIT)
{
emit_insn (gen_rtx_CLOBBER (VOIDmode, operands[0]));
emit_clobber (operands[0]);
emit_move_insn (gen_highpart (SImode, operands[0]), operands[1]);
emit_move_insn (gen_lowpart (SImode, operands[0]), const0_rtx);
emit_insn (gen_ashrdi3 (operands[0], operands[0], GEN_INT (32)));
@ -3365,7 +3365,7 @@
{
if (!TARGET_64BIT)
{
emit_insn (gen_rtx_CLOBBER (VOIDmode, operands[0]));
emit_clobber (operands[0]);
emit_move_insn (gen_lowpart (SImode, operands[0]), operands[1]);
emit_move_insn (gen_highpart (SImode, operands[0]), const0_rtx);
DONE;
@ -5116,7 +5116,7 @@
gen_rtx_ZERO_EXTEND (TImode, div_equal));
operands[4] = gen_reg_rtx(TImode);
emit_insn (gen_rtx_CLOBBER (VOIDmode, operands[4]));
emit_clobber (operands[4]);
emit_move_insn (gen_lowpart (DImode, operands[4]), operands[1]);
emit_move_insn (gen_highpart (DImode, operands[4]), const0_rtx);
@ -5234,7 +5234,7 @@
gen_rtx_ZERO_EXTEND (DImode, div_equal));
operands[4] = gen_reg_rtx(DImode);
emit_insn (gen_rtx_CLOBBER (VOIDmode, operands[4]));
emit_clobber (operands[4]);
emit_move_insn (gen_lowpart (SImode, operands[4]), operands[1]);
emit_move_insn (gen_highpart (SImode, operands[4]), const0_rtx);
@ -8004,7 +8004,7 @@
"flag_pic"
{
emit_insn (s390_load_got ());
emit_insn (gen_rtx_USE (VOIDmode, pic_offset_table_rtx));
emit_use (pic_offset_table_rtx);
DONE;
})
@ -8087,7 +8087,7 @@
if (temp)
emit_move_insn (s390_back_chain_rtx (), temp);
emit_insn (gen_rtx_USE (VOIDmode, base));
emit_use (base);
DONE;
})

13
gcc/config/sh/sh.c
View File

@ -1371,8 +1371,7 @@ prepare_move_operands (rtx operands[], enum machine_mode mode)
if (flag_schedule_insns)
emit_insn (gen_blockage ());
emit_insn (gen_GOTaddr2picreg ());
emit_insn (gen_rtx_USE (VOIDmode, gen_rtx_REG (SImode,
PIC_REG)));
emit_use (gen_rtx_REG (SImode, PIC_REG));
if (flag_schedule_insns)
emit_insn (gen_blockage ());
}
@ -5723,8 +5722,8 @@ output_stack_adjust (int size, rtx reg, int epilogue_p,
mem = gen_tmp_stack_mem (Pmode, gen_rtx_POST_INC (Pmode, reg));
emit_move_insn (tmp_reg, mem);
/* Tell flow the insns that pop r4/r5 aren't dead. */
emit_insn (gen_rtx_USE (VOIDmode, tmp_reg));
emit_insn (gen_rtx_USE (VOIDmode, adj_reg));
emit_use (tmp_reg);
emit_use (adj_reg);
return;
}
const_reg = gen_rtx_REG (GET_MODE (reg), temp);
@ -6862,7 +6861,7 @@ sh_expand_epilogue (bool sibcall_p)
USE PR_MEDIA_REG, since it will be explicitly copied to TR0_REG
by the return pattern. */
if (TEST_HARD_REG_BIT (live_regs_mask, PR_REG))
emit_insn (gen_rtx_USE (VOIDmode, gen_rtx_REG (SImode, PR_REG)));
emit_use (gen_rtx_REG (SImode, PR_REG));
}
static int sh_need_epilogue_known = 0;
@ -6916,7 +6915,7 @@ sh_set_return_address (rtx ra, rtx tmp)
emit_insn (GEN_MOV (rr, ra));
/* Tell flow the register for return isn't dead. */
emit_insn (gen_rtx_USE (VOIDmode, rr));
emit_use (rr);
return;
}
@ -10714,7 +10713,7 @@ sh_expand_t_scc (enum rtx_code code, rtx target)
emit_insn (gen_movrt (result));
else if ((code == EQ && val == 0) || (code == NE && val == 1))
{
emit_insn (gen_rtx_CLOBBER (VOIDmode, result));
emit_clobber (result);
emit_insn (gen_subc (result, result, result));
emit_insn (gen_addsi3 (result, result, const1_rtx));
}

4
gcc/config/sparc/sparc.c
View File

@ -3427,7 +3427,7 @@ load_pic_register (bool delay_pic_helper)
if (TARGET_VXWORKS_RTP)
{
emit_insn (gen_vxworks_load_got ());
emit_insn (gen_rtx_USE (VOIDmode, pic_offset_table_rtx));
emit_use (pic_offset_table_rtx);
return;
}
@ -3457,7 +3457,7 @@ load_pic_register (bool delay_pic_helper)
since setjmp/longjmp can cause life info to screw up.
??? In the case where we don't obey regdecls, this is not sufficient
since we may not fall out the bottom. */
emit_insn (gen_rtx_USE (VOIDmode, pic_offset_table_rtx));
emit_use (pic_offset_table_rtx);
}
/* Emit a call instruction with the pattern given by PAT. ADDR is the

8
gcc/config/sparc/sparc.md
View File

@ -7104,8 +7104,8 @@
adjust_address (result, TARGET_ARCH64 ? TFmode : DFmode, 8));
/* Put USE insns before the return. */
emit_insn (gen_rtx_USE (VOIDmode, valreg1));
emit_insn (gen_rtx_USE (VOIDmode, valreg2));
emit_use (valreg1);
emit_use (valreg2);
/* Construct the return. */
expand_naked_return ();
@ -7191,8 +7191,8 @@
and reload the appropriate value into %fp. */
emit_move_insn (hard_frame_pointer_rtx, stack);
emit_insn (gen_rtx_USE (VOIDmode, stack_pointer_rtx));
emit_insn (gen_rtx_USE (VOIDmode, static_chain_rtx));
emit_use (stack_pointer_rtx);
emit_use (static_chain_rtx);
/* ??? The V9-specific version was disabled in rev 1.65. */
emit_jump_insn (gen_goto_handler_and_restore (labreg));

3
gcc/config/spu/spu.c
View File

@ -1906,8 +1906,7 @@ spu_expand_epilogue (bool sibcall_p)
if (!sibcall_p)
{
emit_insn (gen_rtx_USE
(VOIDmode, gen_rtx_REG (SImode, LINK_REGISTER_REGNUM)));
emit_use (gen_rtx_REG (SImode, LINK_REGISTER_REGNUM));
jump = emit_jump_insn (gen__return ());
emit_barrier_after (jump);
}

2
gcc/config/v850/v850.c
View File

@ -1909,7 +1909,7 @@ Saved %d bytes via epilogue function (%d vs. %d) in function %s\n",
plus_constant (stack_pointer_rtx,
offset)));
emit_insn (gen_rtx_USE (VOIDmode, restore_regs[i]));
emit_use (restore_regs[i]);
offset -= 4;
}

56
gcc/emit-rtl.c
View File

@ -4548,6 +4548,62 @@ emit_note (enum insn_note kind)
return note;
}
/* Emit a clobber of lvalue X. */
rtx
emit_clobber (rtx x)
{
/* CONCATs should not appear in the insn stream. */
if (GET_CODE (x) == CONCAT)
{
emit_clobber (XEXP (x, 0));
return emit_clobber (XEXP (x, 1));
}
return emit_insn (gen_rtx_CLOBBER (VOIDmode, x));
}
/* Return a sequence of insns to clobber lvalue X. */
rtx
gen_clobber (rtx x)
{
rtx seq;
start_sequence ();
emit_clobber (x);
seq = get_insns ();
end_sequence ();
return seq;
}
/* Emit a use of rvalue X. */
rtx
emit_use (rtx x)
{
/* CONCATs should not appear in the insn stream. */
if (GET_CODE (x) == CONCAT)
{
emit_use (XEXP (x, 0));
return emit_use (XEXP (x, 1));
}
return emit_insn (gen_rtx_USE (VOIDmode, x));
}
/* Return a sequence of insns to use rvalue X. */
rtx
gen_use (rtx x)
{
rtx seq;
start_sequence ();
emit_use (x);
seq = get_insns ();
end_sequence ();
return seq;
}
/* Cause next statement to emit a line note even if the line number
has not changed. */

7
gcc/explow.c
View File

@ -1016,11 +1016,8 @@ emit_stack_restore (enum save_level save_level, rtx sa, rtx after)
/* These clobbers prevent the scheduler from moving
references to variable arrays below the code
that deletes (pops) the arrays. */
emit_insn (gen_rtx_CLOBBER (VOIDmode,
gen_rtx_MEM (BLKmode,
gen_rtx_SCRATCH (VOIDmode))));
emit_insn (gen_rtx_CLOBBER (VOIDmode,
gen_rtx_MEM (BLKmode, stack_pointer_rtx)));
emit_clobber (gen_rtx_MEM (BLKmode, gen_rtx_SCRATCH (VOIDmode)));
emit_clobber (gen_rtx_MEM (BLKmode, stack_pointer_rtx));
}
discard_pending_stack_adjust ();

2
gcc/expmed.c
View File

@ -1374,7 +1374,7 @@ extract_bit_field_1 (rtx str_rtx, unsigned HOST_WIDE_INT bitsize,
target = gen_reg_rtx (mode);
/* Indicate for flow that the entire target reg is being set. */
emit_insn (gen_rtx_CLOBBER (VOIDmode, target));
emit_clobber (target);
for (i = 0; i < nwords; i++)
{

10
gcc/expr.c
View File

@ -557,7 +557,7 @@ convert_move (rtx to, rtx from, int unsignedp)
{
if (reg_overlap_mentioned_p (to, from))
from = force_reg (from_mode, from);
emit_insn (gen_rtx_CLOBBER (VOIDmode, to));
emit_clobber (to);
}
convert_move (word_to, from, unsignedp);
emit_unop_insn (code, to, word_to, equiv_code);
@ -3108,7 +3108,7 @@ emit_move_complex_parts (rtx x, rtx y)
hard regs shouldn't appear here except as return values. */
if (!reload_completed && !reload_in_progress
&& REG_P (x) && !reg_overlap_mentioned_p (x, y))
emit_insn (gen_rtx_CLOBBER (VOIDmode, x));
emit_clobber (x);
write_complex_part (x, read_complex_part (y, false), false);
write_complex_part (x, read_complex_part (y, true), true);
@ -3305,7 +3305,7 @@ emit_move_multi_word (enum machine_mode mode, rtx x, rtx y)
if (x != y
&& ! (reload_in_progress || reload_completed)
&& need_clobber != 0)
emit_insn (gen_rtx_CLOBBER (VOIDmode, x));
emit_clobber (x);
emit_insn (seq);
@ -5160,7 +5160,7 @@ store_constructor (tree exp, rtx target, int cleared, HOST_WIDE_INT size)
}
if (REG_P (target) && !cleared)
emit_insn (gen_rtx_CLOBBER (VOIDmode, target));
emit_clobber (target);
/* Store each element of the constructor into the
corresponding field of TARGET. */
@ -5360,7 +5360,7 @@ store_constructor (tree exp, rtx target, int cleared, HOST_WIDE_INT size)
if (!cleared && REG_P (target))
/* Inform later passes that the old value is dead. */
emit_insn (gen_rtx_CLOBBER (VOIDmode, target));
emit_clobber (target);
/* Store each element of the constructor into the
corresponding element of TARGET, determined by counting the

6
gcc/function.c
View File

@ -4311,7 +4311,7 @@ diddle_return_value (void (*doit) (rtx, void *), void *arg)
static void
do_clobber_return_reg (rtx reg, void *arg ATTRIBUTE_UNUSED)
{
emit_insn (gen_rtx_CLOBBER (VOIDmode, reg));
emit_clobber (reg);
}
void
@ -4334,7 +4334,7 @@ clobber_return_register (void)
static void
do_use_return_reg (rtx reg, void *arg ATTRIBUTE_UNUSED)
{
emit_insn (gen_rtx_USE (VOIDmode, reg));
emit_use (reg);
}
static void
@ -4740,7 +4740,7 @@ thread_prologue_and_epilogue_insns (void)
/* Insert an explicit USE for the frame pointer
if the profiling is on and the frame pointer is required. */
if (crtl->profile && frame_pointer_needed)
emit_insn (gen_rtx_USE (VOIDmode, hard_frame_pointer_rtx));
emit_use (hard_frame_pointer_rtx);
/* Retain a map of the prologue insns. */
record_insns (seq, &prologue);

2
gcc/lower-subreg.c
View File

@ -836,7 +836,7 @@ resolve_simple_move (rtx set, rtx insn)
unsigned int i;
if (REG_P (dest) && !HARD_REGISTER_NUM_P (REGNO (dest)))
emit_insn (gen_rtx_CLOBBER (VOIDmode, dest));
emit_clobber (dest);
for (i = 0; i < words; ++i)
emit_move_insn (simplify_gen_subreg_concatn (word_mode, dest,

6
gcc/optabs.c
View File

@ -329,7 +329,7 @@ widen_operand (rtx op, enum machine_mode mode, enum machine_mode oldmode,
part to OP. */
result = gen_reg_rtx (mode);
emit_insn (gen_rtx_CLOBBER (VOIDmode, result));
emit_clobber (result);
emit_move_insn (gen_lowpart (GET_MODE (op), result), op);
return result;
}
@ -1998,7 +1998,7 @@ expand_binop (enum machine_mode mode, optab binoptab, rtx op0, rtx op1,
/* Indicate for flow that the entire target reg is being set. */
if (REG_P (target))
emit_insn (gen_rtx_CLOBBER (VOIDmode, xtarget));
emit_clobber (xtarget);
/* Do the actual arithmetic. */
for (i = 0; i < nwords; i++)
@ -2755,7 +2755,7 @@ expand_doubleword_bswap (enum machine_mode mode, rtx op, rtx target)
if (target == 0)
target = gen_reg_rtx (mode);
if (REG_P (target))
emit_insn (gen_rtx_CLOBBER (VOIDmode, target));
emit_clobber (target);
emit_move_insn (operand_subword (target, 0, 1, mode), t0);
emit_move_insn (operand_subword (target, 1, 1, mode), t1);

2
gcc/reload.c
View File

@ -4083,7 +4083,7 @@ find_reloads (rtx insn, int replace, int ind_levels, int live_known,
PUT_MODE (emit_insn_before (gen_rtx_USE (VOIDmode, operand),
insn), QImode);
if (modified[i] != RELOAD_READ)
emit_insn_after (gen_rtx_CLOBBER (VOIDmode, operand), insn);
emit_insn_after (gen_clobber (operand), insn);
}
}
}

7
gcc/reload1.c
View File

@ -3316,14 +3316,13 @@ eliminate_regs_in_insn (rtx insn, int replace)
this point. */
*recog_data.operand_loc[i] = 0;
/* If an output operand changed from a REG to a MEM and INSN is an
insn, write a CLOBBER insn. */
/* If an output operand changed from a REG to a MEM and INSN is an
insn, write a CLOBBER insn. */
if (recog_data.operand_type[i] != OP_IN
&& REG_P (orig_operand[i])
&& MEM_P (substed_operand[i])
&& replace)
emit_insn_after (gen_rtx_CLOBBER (VOIDmode, orig_operand[i]),
insn);
emit_insn_after (gen_clobber (orig_operand[i]), insn);
}
}

4
gcc/rtl.h
View File

@ -1609,6 +1609,10 @@ extern rtx emit_label (rtx);
extern rtx emit_barrier (void);
extern rtx emit_note (enum insn_note);
extern rtx emit_note_copy (rtx);
extern rtx gen_clobber (rtx);
extern rtx emit_clobber (rtx);
extern rtx gen_use (rtx);
extern rtx emit_use (rtx);
extern rtx make_insn_raw (rtx);
extern rtx make_jump_insn_raw (rtx);
extern void add_function_usage_to (rtx, rtx);

4
gcc/stmt.c
View File

@ -1775,11 +1775,11 @@ expand_nl_goto_receiver (void)
{
/* Clobber the FP when we get here, so we have to make sure it's
marked as used by this function. */
emit_insn (gen_rtx_USE (VOIDmode, hard_frame_pointer_rtx));
emit_use (hard_frame_pointer_rtx);
/* Mark the static chain as clobbered here so life information
doesn't get messed up for it. */
emit_insn (gen_rtx_CLOBBER (VOIDmode, static_chain_rtx));
emit_clobber (static_chain_rtx);
#ifdef HAVE_nonlocal_goto
if (! HAVE_nonlocal_goto)