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i386.c (ix86_expand_push): New.

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* config/i386/i386.c (ix86_expand_push): New.
        * config/i386/mmx.md (push<MMXMODE>1): New.
        * config/i386/sse.md (push<SSEMODE>1): New.
        * config/i386/i386-protos.h: Update.

From-SVN: r93970
This commit is contained in:
Richard Henderson 2005-01-20 10:20:46 -08:00 committed by Richard Henderson
parent 35f46d96df
commit 6b79c03c55
6 changed files with 54 additions and 0 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2005-01-20 Richard Henderson <rth@redhat.com>
* config/i386/i386.c (ix86_expand_push): New.
* config/i386/mmx.md (push<MMXMODE>1): New.
* config/i386/sse.md (push<SSEMODE>1): New.
* config/i386/i386-protos.h: Update.
2005-01-20 Kazu Hirata <kazu@cs.umass.edu>
* params.def, params.h, predict.c, tree-ssa-loop-im.c: Update

1
gcc/config/i386/i386-protos.h
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@ -126,6 +126,7 @@ extern void ix86_expand_clear (rtx);
extern void ix86_expand_move (enum machine_mode, rtx[]);
extern void ix86_expand_vector_move (enum machine_mode, rtx[]);
extern void ix86_expand_vector_move_misalign (enum machine_mode, rtx[]);
extern void ix86_expand_push (enum machine_mode, rtx);
extern rtx ix86_fixup_binary_operands (enum rtx_code,
enum machine_mode, rtx[]);
extern void ix86_fixup_binary_operands_no_copy (enum rtx_code,

18
gcc/config/i386/i386.c
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@ -7754,6 +7754,24 @@ ix86_expand_vector_move_misalign (enum machine_mode mode, rtx operands[])
gcc_unreachable ();
}
/* Expand a push in MODE. This is some mode for which we do not support
proper push instructions, at least from the registers that we expect
the value to live in. */
void
ix86_expand_push (enum machine_mode mode, rtx x)
{
rtx tmp;
tmp = expand_simple_binop (Pmode, PLUS, stack_pointer_rtx,
GEN_INT (-GET_MODE_SIZE (mode)),
stack_pointer_rtx, 1, OPTAB_DIRECT);
if (tmp != stack_pointer_rtx)
emit_move_insn (stack_pointer_rtx, tmp);
tmp = gen_rtx_MEM (mode, stack_pointer_rtx);
emit_move_insn (tmp, x);
}
/* Fix up OPERANDS to satisfy ix86_binary_operator_ok. Return the
destination to use for the operation. If different from the true

8
gcc/config/i386/mmx.md
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@ -175,6 +175,14 @@
[(const_int 0)]
"ix86_split_long_move (operands); DONE;")
(define_expand "push<mode>1"
[(match_operand:MMXMODE 0 "register_operand" "")]
"TARGET_SSE"
{
ix86_expand_push (<MODE>mode, operands[0]);
DONE;
})
(define_expand "movmisalign<mode>"
[(set (match_operand:MMXMODE 0 "nonimmediate_operand" "")
(match_operand:MMXMODE 1 "nonimmediate_operand" ""))]

8
gcc/config/i386/sse.md
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@ -194,6 +194,14 @@
operands[2] = CONST0_RTX (DFmode);
})
(define_expand "push<mode>1"
[(match_operand:SSEMODE 0 "register_operand" "")]
"TARGET_SSE"
{
ix86_expand_push (<MODE>mode, operands[0]);
DONE;
})
(define_expand "movmisalign<mode>"
[(set (match_operand:SSEMODE 0 "nonimmediate_operand" "")
(match_operand:SSEMODE 1 "nonimmediate_operand" ""))]

12
gcc/testsuite/gcc.c-torture/execute/va-arg-25.x Normal file
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@ -0,0 +1,12 @@
# With -Os we default to -mpreferred-stack-boundary=2, which is not
# enough for proper operation with V4SImode when the architecture
# default enables SSE. Arguably setting -mpreferred-stack-boundary=2
# under this condition is incorrect. Finding the correct set of
# options such that we don't exchange a FAIL for an XPASS is hard;
# simply force the stack boundary we need and forget about it for now.
if { [istarget "i?86-*-*"] || [istarget "x86_64-*-*"] } {
set additional_flags "-mpreferred-stack-boundary=4"
}
return 0