Hello!
x32 follows x86_64 ABI, so no MMX regs are saved/restored in
__builtin_apply_args/__builtin_return, even with -mmmx. The patch also
includes some cleanups in this area.
2011-09-06 Uros Bizjak <[email protected]>
* config/i386/i386.c (ix86_function_value_regno_p): Use AX_REG.
(function_value_32): Do not check TARGET_MMX, TARGET_SSE or TARGET_AVX.
testsuite/ChangeLog:
2011-09-06 Uros Bizjak <[email protected]>
* gcc.target/i386/builtin-apply-mmx.c: Require ia32 effective target.
Tested on x86_64-pc-linux-gnu {,-m32}, committed to mainline SVN.
Uros.
Index: config/i386/i386.c
===================================================================
--- config/i386/i386.c (revision 178608)
+++ config/i386/i386.c (working copy)
@@ -7015,7 +7015,7 @@ ix86_function_value_regno_p (const unsigned int re
{
switch (regno)
{
- case 0:
+ case AX_REG:
return true;
case FIRST_FLOAT_REG:
@@ -7053,18 +7053,18 @@ function_value_32 (enum machine_mode orig_mode, en
we normally prevent this case when mmx is not available. However
some ABIs may require the result to be returned like DImode. */
if (VECTOR_MODE_P (mode) && GET_MODE_SIZE (mode) == 8)
- regno = TARGET_MMX ? FIRST_MMX_REG : 0;
+ regno = FIRST_MMX_REG;
/* 16-byte vector modes in %xmm0. See ix86_return_in_memory for where
we prevent this case when sse is not available. However some ABIs
may require the result to be returned like integer TImode. */
else if (mode == TImode
|| (VECTOR_MODE_P (mode) && GET_MODE_SIZE (mode) == 16))
- regno = TARGET_SSE ? FIRST_SSE_REG : 0;
+ regno = FIRST_SSE_REG;
/* 32-byte vector modes in %ymm0. */
else if (VECTOR_MODE_P (mode) && GET_MODE_SIZE (mode) == 32)
- regno = TARGET_AVX ? FIRST_SSE_REG : 0;
+ regno = FIRST_SSE_REG;
/* Floating point return values in %st(0) (unless -mno-fp-ret-in-387). */
else if (X87_FLOAT_MODE_P (mode) && TARGET_FLOAT_RETURNS_IN_80387)
@@ -7098,6 +7098,8 @@ function_value_64 (enum machine_mode orig_mode, en
/* Handle libcalls, which don't provide a type node. */
if (valtype == NULL)
{
+ unsigned int regno;
+
switch (mode)
{
case SFmode:
@@ -7108,15 +7110,19 @@ function_value_64 (enum machine_mode orig_mode, en
case SDmode:
case DDmode:
case TDmode:
- return gen_rtx_REG (mode, FIRST_SSE_REG);
+ regno = FIRST_SSE_REG;
+ break;
case XFmode:
case XCmode:
- return gen_rtx_REG (mode, FIRST_FLOAT_REG);
+ regno = FIRST_FLOAT_REG;
+ break;
case TCmode:
return NULL;
default:
- return gen_rtx_REG (mode, AX_REG);
+ regno = AX_REG;
}
+
+ return gen_rtx_REG (mode, regno);
}
else if (POINTER_TYPE_P (valtype))
{
Index: testsuite/gcc.target/i386/builtin-apply-mmx.c
===================================================================
--- testsuite/gcc.target/i386/builtin-apply-mmx.c (revision 178608)
+++ testsuite/gcc.target/i386/builtin-apply-mmx.c (working copy)
@@ -11,7 +11,7 @@
/* { dg-do run { xfail { ! *-*-darwin* } } } */
/* { dg-options "-O2 -mmmx" } */
-/* { dg-require-effective-target ilp32 } */
+/* { dg-require-effective-target ia32 } */
#include "mmx-check.h"
