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i386.c (output_fp_compare): Support SSE. 

* i386.c (output_fp_compare): Support SSE.
	(prepare_fp_compare_args): SSE comparisons always support memory.
	* i386.h (TARGET_CMOVE): SSE imply cmove.
	* i386.md (cmp?f2): Enable for SSE too.
	(cmpfp_i*): Support SSE.
	(cmpfp_i_sse): New.
	(cmpfp_i_sse_only): New.
	(s*, b* fp expanters): Enable for SSE too.
	(fp_jcc_1_sse, fp_jcc_1_sse_only, fp_jcc_2_sse, fp_jcc_2_sse_only):
	New patterns.

From-SVN: r39647
This commit is contained in:
Jan Hubicka 2001-02-13 23:32:32 +01:00 committed by Jan Hubicka
parent 1464632be3
commit 0644b62861
4 changed files with 157 additions and 22 deletions
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13
gcc/ChangeLog
View File

@ -1,3 +1,16 @@
Tue Feb 13 23:19:27 CET 2001 Jan Hubicka <jh@suse.cz>
* i386.c (output_fp_compare): Support SSE.
(prepare_fp_compare_args): SSE comparisons always support memory.
* i386.h (TARGET_CMOVE): SSE imply cmove.
* i386.md (cmp?f2): Enable for SSE too.
(cmpfp_i*): Support SSE.
(cmpfp_i_sse): New.
(cmpfp_i_sse_only): New.
(s*, b* fp expanters): Enable for SSE too.
(fp_jcc_1_sse, fp_jcc_1_sse_only, fp_jcc_2_sse, fp_jcc_2_sse_only):
New patterns.
Tue Feb 13 23:05:42 CET 2001 Jan Hubicka <jh@suse.cz>
* regclass.c (init_reg_sets_1): Silence warning.

24
gcc/config/i386/i386.c
View File

@ -4036,12 +4036,26 @@ output_fp_compare (insn, operands, eflags_p, unordered_p)
int stack_top_dies;
rtx cmp_op0 = operands[0];
rtx cmp_op1 = operands[1];
int is_sse = SSE_REG_P (operands[0]) | SSE_REG_P (operands[1]);
if (eflags_p == 2)
{
cmp_op0 = cmp_op1;
cmp_op1 = operands[2];
}
if (is_sse)
{
if (GET_MODE (operands[0]) == SFmode)
if (unordered_p)
return "ucomiss\t{%1, %0|%0, %1}";
else
return "comiss\t{%1, %0|%0, %y}";
else
if (unordered_p)
return "ucomisd\t{%1, %0|%0, %1}";
else
return "comisd\t{%1, %0|%0, %y}";
}
if (! STACK_TOP_P (cmp_op0))
abort ();
@ -4797,15 +4811,17 @@ ix86_prepare_fp_compare_args (code, pop0, pop1)
enum machine_mode fpcmp_mode = ix86_fp_compare_mode (code);
rtx op0 = *pop0, op1 = *pop1;
enum machine_mode op_mode = GET_MODE (op0);
int is_sse = SSE_REG_P (op0) | SSE_REG_P (op1);
/* All of the unordered compare instructions only work on registers.
The same is true of the XFmode compare instructions. The same is
true of the fcomi compare instructions. */
if (fpcmp_mode == CCFPUmode
|| op_mode == XFmode
|| op_mode == TFmode
|| ix86_use_fcomi_compare (code))
if (!is_sse
&& (fpcmp_mode == CCFPUmode
|| op_mode == XFmode
|| op_mode == TFmode
|| ix86_use_fcomi_compare (code)))
{
op0 = force_reg (op_mode, op0);
op1 = force_reg (op_mode, op1);

4
gcc/config/i386/i386.h
View File

@ -194,7 +194,9 @@ extern const int x86_partial_reg_dependency, x86_memory_mismatch_stall;
#define TARGET_UNROLL_STRLEN (x86_unroll_strlen & CPUMASK)
#define TARGET_USE_Q_REG (x86_use_q_reg & CPUMASK)
#define TARGET_USE_ANY_REG (x86_use_any_reg & CPUMASK)
#define TARGET_CMOVE (x86_cmove & (1 << ix86_arch))
/* For sane SSE instruction set generation we need fcomi instruction. It is
safe to enable all CMOVE instructions. */
#define TARGET_CMOVE ((x86_cmove & (1 << ix86_arch)) || TARGET_SSE)
#define TARGET_DEEP_BRANCH_PREDICTION (x86_deep_branch & CPUMASK)
#define TARGET_DOUBLE_WITH_ADD (x86_double_with_add & CPUMASK)
#define TARGET_USE_SAHF (x86_use_sahf & CPUMASK)

138
gcc/config/i386/i386.md
View File

@ -1268,7 +1268,7 @@
[(set (reg:CC 17)
(compare:CC (match_operand:DF 0 "cmp_fp_expander_operand" "")
(match_operand:DF 1 "cmp_fp_expander_operand" "")))]
"TARGET_80387"
"TARGET_80387 || TARGET_SSE2"
"
{
ix86_compare_op0 = operands[0];
@ -1280,7 +1280,7 @@
[(set (reg:CC 17)
(compare:CC (match_operand:SF 0 "cmp_fp_expander_operand" "")
(match_operand:SF 1 "cmp_fp_expander_operand" "")))]
"TARGET_80387"
"TARGET_80387 || TARGET_SSE"
"
{
ix86_compare_op0 = operands[0];
@ -1504,6 +1504,7 @@
(compare:CCFP (match_operand 0 "register_operand" "f")
(match_operand 1 "register_operand" "f")))]
"TARGET_80387 && TARGET_CMOVE
&& !SSE_FLOAT_MODE_P (GET_MODE (operands[0]))
&& FLOAT_MODE_P (GET_MODE (operands[0]))
&& GET_MODE (operands[0]) == GET_MODE (operands[0])"
"* return output_fp_compare (insn, operands, 1, 0);"
@ -1511,17 +1512,64 @@
(set_attr "mode" "unknownfp")
(set_attr "athlon_decode" "vector")])
(define_insn "*cmpfp_i_sse"
[(set (reg:CCFP 17)
(compare:CCFP (match_operand 0 "register_operand" "f#x,x#f")
(match_operand 1 "nonimmediate_operand" "f#x,xm#f")))]
"TARGET_80387
&& SSE_FLOAT_MODE_P (GET_MODE (operands[0]))
&& GET_MODE (operands[0]) == GET_MODE (operands[0])"
"* return output_fp_compare (insn, operands, 1, 0);"
[(set_attr "type" "fcmp,sse")
(set_attr "mode" "unknownfp")
(set_attr "athlon_decode" "vector")])
(define_insn "*cmpfp_i_sse_only"
[(set (reg:CCFP 17)
(compare:CCFP (match_operand 0 "register_operand" "x")
(match_operand 1 "nonimmediate_operand" "xm")))]
"SSE_FLOAT_MODE_P (GET_MODE (operands[0]))
&& GET_MODE (operands[0]) == GET_MODE (operands[0])"
"* return output_fp_compare (insn, operands, 1, 0);"
[(set_attr "type" "sse")
(set_attr "mode" "unknownfp")
(set_attr "athlon_decode" "vector")])
(define_insn "*cmpfp_iu"
[(set (reg:CCFPU 17)
(compare:CCFPU (match_operand 0 "register_operand" "f")
(match_operand 1 "register_operand" "f")))]
"TARGET_80387 && TARGET_CMOVE
&& !SSE_FLOAT_MODE_P (GET_MODE (operands[0]))
&& FLOAT_MODE_P (GET_MODE (operands[0]))
&& GET_MODE (operands[0]) == GET_MODE (operands[1])"
"* return output_fp_compare (insn, operands, 1, 1);"
[(set_attr "type" "fcmp")
(set_attr "mode" "unknownfp")
(set_attr "athlon_decode" "vector")])
(define_insn "*cmpfp_iu_sse"
[(set (reg:CCFPU 17)
(compare:CCFPU (match_operand 0 "register_operand" "f#x,x#f")
(match_operand 1 "nonimmediate_operand" "f#x,xm#f")))]
"TARGET_80387
&& SSE_FLOAT_MODE_P (GET_MODE (operands[0]))
&& GET_MODE (operands[0]) == GET_MODE (operands[1])"
"* return output_fp_compare (insn, operands, 1, 1);"
[(set_attr "type" "fcmp,sse")
(set_attr "mode" "unknownfp")
(set_attr "athlon_decode" "vector")])
(define_insn "*cmpfp_iu_sse_only"
[(set (reg:CCFPU 17)
(compare:CCFPU (match_operand 0 "register_operand" "x")
(match_operand 1 "nonimmediate_operand" "xm")))]
"SSE_FLOAT_MODE_P (GET_MODE (operands[0]))
&& GET_MODE (operands[0]) == GET_MODE (operands[1])"
"* return output_fp_compare (insn, operands, 1, 1);"
[(set_attr "type" "sse")
(set_attr "mode" "unknownfp")
(set_attr "athlon_decode" "vector")])
;; Move instructions.
@ -9205,7 +9253,7 @@
(define_expand "sunordered"
[(set (match_operand:SI 0 "register_operand" "")
(unordered:SI (reg:CC 17) (const_int 0)))]
"TARGET_80387"
"TARGET_80387 || TARGET_SSE"
"if (ix86_expand_setcc (UNORDERED, operands[0])) DONE; else FAIL;")
(define_expand "sordered"
@ -9217,37 +9265,37 @@
(define_expand "suneq"
[(set (match_operand:SI 0 "register_operand" "")
(uneq:SI (reg:CC 17) (const_int 0)))]
"TARGET_80387"
"TARGET_80387 || TARGET_SSE"
"if (ix86_expand_setcc (UNEQ, operands[0])) DONE; else FAIL;")
(define_expand "sunge"
[(set (match_operand:SI 0 "register_operand" "")
(unge:SI (reg:CC 17) (const_int 0)))]
"TARGET_80387"
"TARGET_80387 || TARGET_SSE"
"if (ix86_expand_setcc (UNGE, operands[0])) DONE; else FAIL;")
(define_expand "sungt"
[(set (match_operand:SI 0 "register_operand" "")
(ungt:SI (reg:CC 17) (const_int 0)))]
"TARGET_80387"
"TARGET_80387 || TARGET_SSE"
"if (ix86_expand_setcc (UNGT, operands[0])) DONE; else FAIL;")
(define_expand "sunle"
[(set (match_operand:SI 0 "register_operand" "")
(unle:SI (reg:CC 17) (const_int 0)))]
"TARGET_80387"
"TARGET_80387 || TARGET_SSE"
"if (ix86_expand_setcc (UNLE, operands[0])) DONE; else FAIL;")
(define_expand "sunlt"
[(set (match_operand:SI 0 "register_operand" "")
(unlt:SI (reg:CC 17) (const_int 0)))]
"TARGET_80387"
"TARGET_80387 || TARGET_SSE"
"if (ix86_expand_setcc (UNLT, operands[0])) DONE; else FAIL;")
(define_expand "sltgt"
[(set (match_operand:SI 0 "register_operand" "")
(ltgt:SI (reg:CC 17) (const_int 0)))]
"TARGET_80387"
"TARGET_80387 || TARGET_SSE"
"if (ix86_expand_setcc (LTGT, operands[0])) DONE; else FAIL;")
(define_insn "*setcc_1"
@ -9360,7 +9408,7 @@
(if_then_else (match_dup 1)
(label_ref (match_operand 0 "" ""))
(pc)))]
"TARGET_80387"
"TARGET_80387 || TARGET_SSE"
"ix86_expand_branch (UNORDERED, operands[0]); DONE;")
(define_expand "bordered"
@ -9368,7 +9416,7 @@
(if_then_else (match_dup 1)
(label_ref (match_operand 0 "" ""))
(pc)))]
"TARGET_80387"
"TARGET_80387 || TARGET_SSE"
"ix86_expand_branch (ORDERED, operands[0]); DONE;")
(define_expand "buneq"
@ -9376,7 +9424,7 @@
(if_then_else (match_dup 1)
(label_ref (match_operand 0 "" ""))
(pc)))]
"TARGET_80387"
"TARGET_80387 || TARGET_SSE"
"ix86_expand_branch (UNEQ, operands[0]); DONE;")
(define_expand "bunge"
@ -9384,7 +9432,7 @@
(if_then_else (match_dup 1)
(label_ref (match_operand 0 "" ""))
(pc)))]
"TARGET_80387"
"TARGET_80387 || TARGET_SSE"
"ix86_expand_branch (UNGE, operands[0]); DONE;")
(define_expand "bungt"
@ -9392,7 +9440,7 @@
(if_then_else (match_dup 1)
(label_ref (match_operand 0 "" ""))
(pc)))]
"TARGET_80387"
"TARGET_80387 || TARGET_SSE"
"ix86_expand_branch (UNGT, operands[0]); DONE;")
(define_expand "bunle"
@ -9400,7 +9448,7 @@
(if_then_else (match_dup 1)
(label_ref (match_operand 0 "" ""))
(pc)))]
"TARGET_80387"
"TARGET_80387 || TARGET_SSE"
"ix86_expand_branch (UNLE, operands[0]); DONE;")
(define_expand "bunlt"
@ -9408,7 +9456,7 @@
(if_then_else (match_dup 1)
(label_ref (match_operand 0 "" ""))
(pc)))]
"TARGET_80387"
"TARGET_80387 || TARGET_SSE"
"ix86_expand_branch (UNLT, operands[0]); DONE;")
(define_expand "bltgt"
@ -9416,7 +9464,7 @@
(if_then_else (match_dup 1)
(label_ref (match_operand 0 "" ""))
(pc)))]
"TARGET_80387"
"TARGET_80387 || TARGET_SSE"
"ix86_expand_branch (LTGT, operands[0]); DONE;")
(define_insn "*jcc_1"
@ -9467,10 +9515,38 @@
(clobber (reg:CCFP 18))
(clobber (reg:CCFP 17))]
"TARGET_CMOVE && TARGET_80387
&& !SSE_FLOAT_MODE_P (GET_MODE (operands[1]))
&& FLOAT_MODE_P (GET_MODE (operands[1]))
&& GET_MODE (operands[1]) == GET_MODE (operands[2])"
"#")
(define_insn "*fp_jcc_1_sse"
[(set (pc)
(if_then_else (match_operator 0 "comparison_operator"
[(match_operand 1 "register_operand" "f#x,x#f")
(match_operand 2 "nonimmediate_operand" "f#x,xm#f")])
(label_ref (match_operand 3 "" ""))
(pc)))
(clobber (reg:CCFP 18))
(clobber (reg:CCFP 17))]
"TARGET_80387
&& SSE_FLOAT_MODE_P (GET_MODE (operands[1]))
&& GET_MODE (operands[1]) == GET_MODE (operands[2])"
"#")
(define_insn "*fp_jcc_1_sse_only"
[(set (pc)
(if_then_else (match_operator 0 "comparison_operator"
[(match_operand 1 "register_operand" "x")
(match_operand 2 "nonimmediate_operand" "xm")])
(label_ref (match_operand 3 "" ""))
(pc)))
(clobber (reg:CCFP 18))
(clobber (reg:CCFP 17))]
"SSE_FLOAT_MODE_P (GET_MODE (operands[1]))
&& GET_MODE (operands[1]) == GET_MODE (operands[2])"
"#")
(define_insn "*fp_jcc_2"
[(set (pc)
(if_then_else (match_operator 0 "comparison_operator"
@ -9481,10 +9557,38 @@
(clobber (reg:CCFP 18))
(clobber (reg:CCFP 17))]
"TARGET_CMOVE && TARGET_80387
&& !SSE_FLOAT_MODE_P (GET_MODE (operands[1]))
&& FLOAT_MODE_P (GET_MODE (operands[1]))
&& GET_MODE (operands[1]) == GET_MODE (operands[2])"
"#")
(define_insn "*fp_jcc_2_sse"
[(set (pc)
(if_then_else (match_operator 0 "comparison_operator"
[(match_operand 1 "register_operand" "f#x,x#f")
(match_operand 2 "nonimmediate_operand" "f#x,xm#f")])
(pc)
(label_ref (match_operand 3 "" ""))))
(clobber (reg:CCFP 18))
(clobber (reg:CCFP 17))]
"TARGET_80387
&& SSE_FLOAT_MODE_P (GET_MODE (operands[1]))
&& GET_MODE (operands[1]) == GET_MODE (operands[2])"
"#")
(define_insn "*fp_jcc_2_sse_only"
[(set (pc)
(if_then_else (match_operator 0 "comparison_operator"
[(match_operand 1 "register_operand" "x")
(match_operand 2 "nonimmediate_operand" "xm")])
(pc)
(label_ref (match_operand 3 "" ""))))
(clobber (reg:CCFP 18))
(clobber (reg:CCFP 17))]
"SSE_FLOAT_MODE_P (GET_MODE (operands[1]))
&& GET_MODE (operands[1]) == GET_MODE (operands[2])"
"#")
(define_insn "*fp_jcc_3"
[(set (pc)
(if_then_else (match_operator 0 "comparison_operator"