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Partially undo Mar 7 change.

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Partially undo Mar 7 change.  Only call
emit_library_call with no_queue == 1 for const functions.

From-SVN: r1961
This commit is contained in:
Jim Wilson 1992-08-25 23:30:34 -07:00
parent 2df53c0b9b
commit d562e42ef4
2 changed files with 22 additions and 13 deletions
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31
gcc/expr.c
View File

@ -1219,12 +1219,12 @@ emit_block_move (x, y, size, align)
}
#ifdef TARGET_MEM_FUNCTIONS
emit_library_call (memcpy_libfunc, 1,
emit_library_call (memcpy_libfunc, 0,
VOIDmode, 3, XEXP (x, 0), Pmode,
XEXP (y, 0), Pmode,
convert_to_mode (Pmode, size, 1), Pmode);
#else
emit_library_call (bcopy_libfunc, 1,
emit_library_call (bcopy_libfunc, 0,
VOIDmode, 3, XEXP (y, 0), Pmode,
XEXP (x, 0), Pmode,
convert_to_mode (Pmode, size, 1), Pmode);
@ -1328,12 +1328,12 @@ clear_storage (object, size)
if (GET_MODE (object) == BLKmode)
{
#ifdef TARGET_MEM_FUNCTIONS
emit_library_call (memset_libfunc, 1,
emit_library_call (memset_libfunc, 0,
VOIDmode, 3,
XEXP (object, 0), Pmode, const0_rtx, Pmode,
GEN_INT (size), Pmode);
#else
emit_library_call (bzero_libfunc, 1,
emit_library_call (bzero_libfunc, 0,
VOIDmode, 2,
XEXP (object, 0), Pmode,
GEN_INT (size), Pmode);
@ -1696,11 +1696,11 @@ emit_push_insn (x, mode, type, size, align, partial, reg, extra,
to force it to pop the bcopy-arguments right away. */
NO_DEFER_POP;
#ifdef TARGET_MEM_FUNCTIONS
emit_library_call (memcpy_libfunc, 1,
emit_library_call (memcpy_libfunc, 0,
VOIDmode, 3, temp, Pmode, XEXP (xinner, 0), Pmode,
size, Pmode);
#else
emit_library_call (bcopy_libfunc, 1,
emit_library_call (bcopy_libfunc, 0,
VOIDmode, 3, XEXP (xinner, 0), Pmode, temp, Pmode,
size, Pmode);
#endif
@ -1818,7 +1818,16 @@ emit_push_insn (x, mode, type, size, align, partial, reg, extra,
NO_QUEUE will be true if and only if the library call is a `const' call
which will be enclosed in REG_LIBCALL/REG_RETVAL notes; it is equivalent
to the variable is_const in expand_call. */
to the variable is_const in expand_call.
NO_QUEUE must be true for const calls, because if it isn't, then
any pending increment will be emitted between REG_LIBCALL/REG_RETVAL notes,
and will be lost if the libcall sequence is optimized away.
NO_QUEUE must be false for non-const calls, because if it isn't, the
call insn will have its CONST_CALL_P bit set, and it will be incorrectly
optimized. For instance, the instruction scheduler may incorrectly
move memory references across the non-const call. */
void
emit_library_call (va_alist)
@ -2148,12 +2157,12 @@ expand_assignment (to, from, want_value, suggest_reg)
rtx size = expr_size (from);
#ifdef TARGET_MEM_FUNCTIONS
emit_library_call (memcpy_libfunc, 1,
emit_library_call (memcpy_libfunc, 0,
VOIDmode, 3, XEXP (to_rtx, 0), Pmode,
XEXP (from_rtx, 0), Pmode,
size, Pmode);
#else
emit_library_call (bcopy_libfunc, 1,
emit_library_call (bcopy_libfunc, 0,
VOIDmode, 3, XEXP (from_rtx, 0), Pmode,
XEXP (to_rtx, 0), Pmode,
size, Pmode);
@ -2350,10 +2359,10 @@ store_expr (exp, target, suggest_reg)
if (size != const0_rtx)
{
#ifdef TARGET_MEM_FUNCTIONS
emit_library_call (memset_libfunc, 1, VOIDmode, 3,
emit_library_call (memset_libfunc, 0, VOIDmode, 3,
temp, Pmode, const0_rtx, Pmode, size, Pmode);
#else
emit_library_call (bzero_libfunc, 1, VOIDmode, 2,
emit_library_call (bzero_libfunc, 0, VOIDmode, 2,
temp, Pmode, size, Pmode);
#endif
}

4
gcc/optabs.c
View File

@ -1708,12 +1708,12 @@ emit_cmp_insn (x, y, comparison, size, mode, unsignedp, align)
#endif
{
#ifdef TARGET_MEM_FUNCTIONS
emit_library_call (memcmp_libfunc, 1,
emit_library_call (memcmp_libfunc, 0,
TYPE_MODE (integer_type_node), 3,
XEXP (x, 0), Pmode, XEXP (y, 0), Pmode,
size, Pmode);
#else
emit_library_call (bcmp_libfunc, 1,
emit_library_call (bcmp_libfunc, 0,
TYPE_MODE (integer_type_node), 3,
XEXP (x, 0), Pmode, XEXP (y, 0), Pmode,
size, Pmode);