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re PR target/88521 (GCC from r266355 miscompiles x265 for mingw-w64 target) 

PR target/88521
	* config/i386/i386.c (function_value_ms_64): Return small sturct in
	AX_REG and float/double in FIRST_SSE_REG for 4 or 8 byte modes.

From-SVN: r267622
This commit is contained in:
Mateusz B 2019-01-07 08:31:19 +01:00 committed by Martin Liska
parent 0aa6ee3670
commit 4075fc7024
4 changed files with 48 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2018-12-26 Mateusz B <mateuszb@poczta.onet.pl>
PR target/88521
* config/i386/i386.c (function_value_ms_64): Return small sturct in
AX_REG and float/double in FIRST_SSE_REG for 4 or 8 byte modes.
2019-01-05 Jan Hubicka <hubicka@ucw.cz>
PR tree-opt/86020

7
gcc/config/i386/i386.c
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@ -9063,6 +9063,13 @@ function_value_ms_64 (machine_mode orig_mode, machine_mode mode,
&& !COMPLEX_MODE_P (mode))
regno = FIRST_SSE_REG;
break;
case 8:
case 4:
if (valtype != NULL_TREE && AGGREGATE_TYPE_P (valtype))
break;
if (mode == SFmode || mode == DFmode)
regno = FIRST_SSE_REG;
break;
default:
break;
}

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2018-12-26 Mateusz B <mateuszb@poczta.onet.pl>
PR target/88521
* gcc.target/i386/pr88521.c: New testcase.
2019-01-06 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/88658

30
gcc/testsuite/gcc.target/i386/pr88521.c Normal file
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@ -0,0 +1,30 @@
/* { dg-do compile { target lp64 } } */
/* { dg-options "-O2" } */
/* { dg-final { scan-assembler-times "movl\[^\n\r]*, %eax|mov\[ \t]*eax," 1 } } */
/* { dg-final { scan-assembler-times "movss\[^\n\r]*, %xmm" 1 } } */
/* { dg-final { scan-assembler-times "movsd\[^\n\r]*, %xmm" 1 } } */
typedef struct
{
float x;
} Float;
Float __attribute__((ms_abi)) fn1()
{
Float v;
v.x = 3.145F;
return v;
}
float __attribute__((ms_abi)) fn2 ()
{
float v;
v = 3.145F;
return v;
}
double __attribute__((ms_abi)) fn3 ()
{
double v;
v = 3.145;
return v;
}