From a82e045dea91ea5a78f65fcaf6422cf0ea034c26 Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Wed, 22 Sep 2010 01:33:01 +0200 Subject: [PATCH] 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 --- gcc/ChangeLog | 6 ++++++ gcc/simplify-rtx.c | 4 ++-- gcc/testsuite/ChangeLog | 5 +++++ gcc/testsuite/gcc.target/i386/pr45739.c | 24 ++++++++++++++++++++++++ 4 files changed, 37 insertions(+), 2 deletions(-) create mode 100644 gcc/testsuite/gcc.target/i386/pr45739.c diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 0fddd4a2bd8..5b613389999 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2010-09-22 Jakub Jelinek + + 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 * config/rs6000/rs6000.h (OUTPUT_ADDR_CONST_EXTRA): Remove macros. diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index fb8ba396d4f..122c45fdf64 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 101d68470e2..9bd4cb2d04c 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2010-09-22 Jakub Jelinek + + PR rtl-optimization/45739 + * gcc.target/i386/pr45739.c: New test. + 2010-09-21 Mikael Morin 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 00000000000..51e28fc2264 --- /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 + +__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" } } */ -- 2.30.2