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| author | Jakub Jelinek <jakub@redhat.com> | 2010-09-22 01:33:01 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2010-09-22 01:33:01 +0200 |
| commit | a82e045dea91ea5a78f65fcaf6422cf0ea034c26 (patch) | |
| tree | 457c240101a0da6f13c29e050b768f8e222d71c1 /gcc | |
| parent | 29a80ea6281e267cf93634a984b8a22b7559439a (diff) | |
| download | gcc-a82e045dea91ea5a78f65fcaf6422cf0ea034c26.zip gcc-a82e045dea91ea5a78f65fcaf6422cf0ea034c26.tar.gz gcc-a82e045dea91ea5a78f65fcaf6422cf0ea034c26.tar.bz2 | |
re PR rtl-optimization/45739 (static evaluation of SSE intrinsics (pxor))
PR rtl-optimization/45739
* simplify-rtx.c (simplify_binary_operation_1): Optimize even
vector mode | CONST0_RTX (mode) and ^ CONST0_RTX (mode).
* gcc.target/i386/pr45739.c: New test.
From-SVN: r164501
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/simplify-rtx.c | 4 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/pr45739.c | 24 |
4 files changed, 37 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 0fddd4a..5b61338 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2010-09-22 Jakub Jelinek <jakub@redhat.com> + + PR rtl-optimization/45739 + * simplify-rtx.c (simplify_binary_operation_1): Optimize even + vector mode | CONST0_RTX (mode) and ^ CONST0_RTX (mode). + 2010-09-21 Anatoly Sokolov <aesok@post.ru> * config/rs6000/rs6000.h (OUTPUT_ADDR_CONST_EXTRA): Remove macros. diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index fb8ba39..122c45f 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -2260,7 +2260,7 @@ simplify_binary_operation_1 (enum rtx_code code, enum machine_mode mode, break; case IOR: - if (trueop1 == const0_rtx) + if (trueop1 == CONST0_RTX (mode)) return op0; if (CONST_INT_P (trueop1) && ((INTVAL (trueop1) & GET_MODE_MASK (mode)) @@ -2402,7 +2402,7 @@ simplify_binary_operation_1 (enum rtx_code code, enum machine_mode mode, break; case XOR: - if (trueop1 == const0_rtx) + if (trueop1 == CONST0_RTX (mode)) return op0; if (CONST_INT_P (trueop1) && ((INTVAL (trueop1) & GET_MODE_MASK (mode)) diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 101d684..9bd4cb2 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2010-09-22 Jakub Jelinek <jakub@redhat.com> + + PR rtl-optimization/45739 + * gcc.target/i386/pr45739.c: New test. + 2010-09-21 Mikael Morin <mikael@gcc.gnu.org> PR fortran/45648 diff --git a/gcc/testsuite/gcc.target/i386/pr45739.c b/gcc/testsuite/gcc.target/i386/pr45739.c new file mode 100644 index 0000000..51e28fc --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr45739.c @@ -0,0 +1,24 @@ +/* PR rtl-optimization/45739 */ +/* { dg-do compile } */ +/* { dg-options "-O2 -msse2" } */ + +#include <emmintrin.h> + +__m128i var; + +void +foo (void) +{ + __m128i zero = _mm_setzero_si128 (); + var = _mm_xor_si128 (zero, var); +} + +void +bar (void) +{ + __m128i zero = _mm_setzero_si128 (); + var = _mm_or_si128 (var, zero); +} + +/* { dg-final { scan-assembler-not "pxor" } } */ +/* { dg-final { scan-assembler-not "por" } } */ |