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re PR rtl-optimization/60776 (FAIL gcc.dg/builtin-bswap-6.c and gcc.dg/builtin-bswap-7.c) 

2014-04-08  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

	PR rtl-optimization/60776
	* gcc.dg/builtin-bswap-6.c: Use -mbranch-cost=0 for s390.
	* gcc.dg/builtin-bswap-7.c: Likewise.
	* gcc.dg/builtin-bswap-6a.c: New testcase.
	* gcc.dg/builtin-bswap-7a.c: New testcase.

	Revert
	2014-04-04  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

	* gcc.dg/builtin-bswap-6.c: Adjust return value to disable GCC
	optimization.
	* gcc.dg/builtin-bswap-7.c: Likewise.

From-SVN: r209221
This commit is contained in:
Andreas Krebbel 2014-04-08 14:18:46 +00:00 committed by Andreas Krebbel
parent 3fa68ccbb6
commit e2e6026693
5 changed files with 117 additions and 15 deletions
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15
gcc/testsuite/ChangeLog
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@ -1,3 +1,18 @@
2014-04-08 Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
PR rtl-optimization/60776
* gcc.dg/builtin-bswap-6.c: Use -mbranch-cost=0 for s390.
* gcc.dg/builtin-bswap-7.c: Likewise.
* gcc.dg/builtin-bswap-6a.c: New testcase.
* gcc.dg/builtin-bswap-7a.c: New testcase.
Revert
2014-04-04 Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
* gcc.dg/builtin-bswap-6.c: Adjust return value to disable GCC
optimization.
* gcc.dg/builtin-bswap-7.c: Likewise.
2014-04-08 Richard Biener <rguenther@suse.de>
PR tree-optimization/60785

15
gcc/testsuite/gcc.dg/builtin-bswap-6.c
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@ -1,11 +1,10 @@
/* { dg-do compile { target arm*-*-* alpha*-*-* i?86-*-* powerpc*-*-* rs6000-*-* x86_64-*-* s390*-*-* } } */
/* { dg-require-effective-target stdint_types } */
/* { dg-options "-O -fdump-rtl-combine" } */
/* { dg-options "-O -fdump-rtl-combine -march=z900" { target s390-*-* } } */
/* The test intentionally returns 1/2 instead of the obvious 0/1 to
prevent GCC from calculating the return value with arithmetic
instead of a comparison. */
/* The branch cost setting prevents the return value from being
calculated with arithmetic instead of doing a compare. */
/* { dg-additional-options "-march=z900 -mbranch-cost=0" { target s390*-*-* } } */
#include <stdint.h>
@ -15,28 +14,28 @@ int foo1 (uint32_t a)
{
if (BS (a) == 0xA0000)
return 1;
return 2;
return 0;
}
int foo2 (uint32_t a)
{
if (BS (a) != 0xA0000)
return 1;
return 2;
return 0;
}
int foo3 (uint32_t a, uint32_t b)
{
if (BS (a) == BS (b))
return 1;
return 2;
return 0;
}
int foo4 (uint32_t a, uint32_t b)
{
if (BS (a) != BS (b))
return 1;
return 2;
return 0;
}
/* { dg-final { scan-rtl-dump-not "bswapsi" "combine" } } */

44
gcc/testsuite/gcc.dg/builtin-bswap-6a.c Normal file
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@ -0,0 +1,44 @@
/* { dg-do compile { target arm*-*-* alpha*-*-* i?86-*-* powerpc*-*-* rs6000-*-* x86_64-*-* s390*-*-* } } */
/* { dg-require-effective-target stdint_types } */
/* { dg-options "-O2 -fdump-rtl-combine" } */
/* { dg-additional-options "-march=z900" { target s390-*-* } } */
/* The test is similiar to builtin-bswap-6.c but returns 1/2 instead
of 0/1 to prevent GCC from calculating the return value with
arithmetic instead of a comparison. This requires the optimization
level to be bumped up to -O2 at least for x86_64. */
#include <stdint.h>
#define BS(X) __builtin_bswap32(X)
int foo1 (uint32_t a)
{
if (BS (a) == 0xA0000)
return 1;
return 2;
}
int foo2 (uint32_t a)
{
if (BS (a) != 0xA0000)
return 1;
return 2;
}
int foo3 (uint32_t a, uint32_t b)
{
if (BS (a) == BS (b))
return 1;
return 2;
}
int foo4 (uint32_t a, uint32_t b)
{
if (BS (a) != BS (b))
return 1;
return 2;
}
/* { dg-final { scan-rtl-dump-not "bswapsi" "combine" } } */
/* { dg-final { cleanup-rtl-dump "combine" } } */

14
gcc/testsuite/gcc.dg/builtin-bswap-7.c
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@ -3,9 +3,9 @@
/* { dg-require-effective-target lp64 } */
/* { dg-options "-O -fdump-rtl-combine" } */
/* The test intentionally returns 1/2 instead of the obvious 0/1 to
prevent GCC from calculating the return value with arithmetic
instead of a comparison. */
/* The branch cost setting prevents the return value from being
calculated with arithmetic instead of doing a compare. */
/* { dg-additional-options "-mbranch-cost=0" { target s390x-*-* } } */
#include <stdint.h>
@ -15,28 +15,28 @@ int foo1 (uint64_t a)
{
if (BS (a) == 0xA00000000)
return 1;
return 2;
return 0;
}
int foo2 (uint64_t a)
{
if (BS (a) != 0xA00000000)
return 1;
return 2;
return 0;
}
int foo3 (uint64_t a, uint64_t b)
{
if (BS (a) == BS (b))
return 1;
return 2;
return 0;
}
int foo4 (uint64_t a, uint64_t b)
{
if (BS (a) != BS (b))
return 1;
return 2;
return 0;
}
/* { dg-final { scan-rtl-dump-not "bswapdi" "combine" } } */

44
gcc/testsuite/gcc.dg/builtin-bswap-7a.c Normal file
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@ -0,0 +1,44 @@
/* { dg-do compile { target arm*-*-* alpha*-*-* ia64*-*-* x86_64-*-* s390x-*-* powerpc*-*-* rs6000-*-* } } */
/* { dg-require-effective-target stdint_types } */
/* { dg-require-effective-target lp64 } */
/* { dg-options "-O2 -fdump-rtl-combine" } */
/* The test is similiar to builtin-bswap-7.c but returns 1/2 instead
of 0/1 to prevent GCC from calculating the return value with
arithmetic instead of a comparison. This requires the optimization
level to be bumped up to -O2 at least for x86_64. */
#include <stdint.h>
#define BS(X) __builtin_bswap64(X)
int foo1 (uint64_t a)
{
if (BS (a) == 0xA00000000)
return 1;
return 2;
}
int foo2 (uint64_t a)
{
if (BS (a) != 0xA00000000)
return 1;
return 2;
}
int foo3 (uint64_t a, uint64_t b)
{
if (BS (a) == BS (b))
return 1;
return 2;
}
int foo4 (uint64_t a, uint64_t b)
{
if (BS (a) != BS (b))
return 1;
return 2;
}
/* { dg-final { scan-rtl-dump-not "bswapdi" "combine" } } */
/* { dg-final { cleanup-rtl-dump "combine" } } */