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| author | Jakub Jelinek <jakub@redhat.com> | 2006-02-21 09:09:08 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2006-02-21 09:09:08 +0100 |
| commit | 5a9e432d7e7ea1281ebe47f96b7ecbd3e508b994 (patch) | |
| tree | fa4db98c807b982eea6a11176bacb3547da1b224 /gcc | |
| parent | c1a70a3c1e62543419433baf6b1f4c441ca2c63e (diff) | |
| download | gcc-5a9e432d7e7ea1281ebe47f96b7ecbd3e508b994.zip gcc-5a9e432d7e7ea1281ebe47f96b7ecbd3e508b994.tar.gz gcc-5a9e432d7e7ea1281ebe47f96b7ecbd3e508b994.tar.bz2 | |
re PR middle-end/26379 (ICE on vector shift RTL simplification)
PR middle-end/26379
* combine.c (simplify_shift_const_1): Disable nested shifts
optimization for vector shifts.
* gcc.target/i386/mmx-7.c: New test.
From-SVN: r111328
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/combine.c | 3 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/mmx-7.c | 18 |
4 files changed, 31 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 0349d92..eee818b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2006-02-21 Jakub Jelinek <jakub@redhat.com> + + PR middle-end/26379 + * combine.c (simplify_shift_const_1): Disable nested shifts + optimization for vector shifts. + 2006-02-20 Roger Sayle <roger@eyesopen.com> PR tree-optimization/26361 diff --git a/gcc/combine.c b/gcc/combine.c index 96ebd20..9240b32 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -8737,7 +8737,8 @@ simplify_shift_const_1 (enum rtx_code code, enum machine_mode result_mode, && INTVAL (XEXP (varop, 1)) >= 0 && INTVAL (XEXP (varop, 1)) < GET_MODE_BITSIZE (GET_MODE (varop)) && GET_MODE_BITSIZE (result_mode) <= HOST_BITS_PER_WIDE_INT - && GET_MODE_BITSIZE (mode) <= HOST_BITS_PER_WIDE_INT) + && GET_MODE_BITSIZE (mode) <= HOST_BITS_PER_WIDE_INT + && !VECTOR_MODE_P (result_mode)) { enum rtx_code first_code = GET_CODE (varop); unsigned int first_count = INTVAL (XEXP (varop, 1)); diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index cf2d999..266489f 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2006-02-21 Jakub Jelinek <jakub@redhat.com> + + PR middle-end/26379 + * gcc.target/i386/mmx-7.c: New test. + 2006-02-20 Roger Sayle <roger@eyesopen.com> PR tree-optimization/26361 diff --git a/gcc/testsuite/gcc.target/i386/mmx-7.c b/gcc/testsuite/gcc.target/i386/mmx-7.c new file mode 100644 index 0000000..683ca10 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/mmx-7.c @@ -0,0 +1,18 @@ +/* PR middle-end/26379 */ +/* { dg-do compile } */ +/* { dg-options "-O2 -mmmx" } */ + +#include <mmintrin.h> + +void +foo (__m64 *p) +{ + __m64 m; + + m = p[0]; + m = _mm_srli_pi16(m, 2); + m = _mm_slli_pi16(m, 8); + + p[0] = m; + _mm_empty(); +} |