diff options
| author | Jakub Jelinek <jakub@redhat.com> | 2012-09-27 12:48:07 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2012-09-27 12:48:07 +0200 |
| commit | 6b74529d9b26ae4d4fd0bdb96b9ce44c40738c9f (patch) | |
| tree | a5150089f8e48540b0049e8de73fc0d5117fbf56 /gcc | |
| parent | e481cda684ff01bab0d4c1d3813dbfc92557182e (diff) | |
| download | gcc-6b74529d9b26ae4d4fd0bdb96b9ce44c40738c9f.zip gcc-6b74529d9b26ae4d4fd0bdb96b9ce44c40738c9f.tar.gz gcc-6b74529d9b26ae4d4fd0bdb96b9ce44c40738c9f.tar.bz2 | |
re PR target/54703 (_mm_sub_pd is incorrectly substituted with vandnps)
PR target/54703
* simplify-rtx.c (simplify_binary_operation_1): Perform
(x - (x & y)) -> (x & ~y) optimization only for integral
modes.
* gcc.target/i386/pr54703.c: New test.
From-SVN: r191801
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/simplify-rtx.c | 2 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/pr54703.c | 36 |
4 files changed, 49 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 5850528..747039a 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2012-09-27 Jakub Jelinek <jakub@redhat.com> + + PR target/54703 + * simplify-rtx.c (simplify_binary_operation_1): Perform + (x - (x & y)) -> (x & ~y) optimization only for integral + modes. + 2012-09-27 Marc Glisse <marc.glisse@inria.fr> PR c/53024 diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index 6b4b9f0..af85ccc 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -2239,7 +2239,7 @@ simplify_binary_operation_1 (enum rtx_code code, enum machine_mode mode, neg_const_int (mode, op1)); /* (x - (x & y)) -> (x & ~y) */ - if (GET_CODE (op1) == AND) + if (INTEGRAL_MODE_P (mode) && GET_CODE (op1) == AND) { if (rtx_equal_p (op0, XEXP (op1, 0))) { diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index ac9e619..c23166e 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2012-09-27 Jakub Jelinek <jakub@redhat.com> + + PR target/54703 + * gcc.target/i386/pr54703.c: New test. + 2012-09-27 Richard Guenther <rguenther@suse.de> PR lto/54709 diff --git a/gcc/testsuite/gcc.target/i386/pr54703.c b/gcc/testsuite/gcc.target/i386/pr54703.c new file mode 100644 index 0000000..e30c293 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr54703.c @@ -0,0 +1,36 @@ +/* PR target/54703 */ +/* { dg-do run { target sse2_runtime } } */ +/* { dg-options "-O -msse2" } */ +/* { dg-additional-options "-mavx -mtune=bdver1" { target avx_runtime } } */ + +extern void abort (void); +typedef double V __attribute__((vector_size(16))); + +union { + unsigned long long m[2]; + V v; +} u = { { 0xffffffffff000000ULL, 0xffffffffff000000ULL } }; + +static inline V +foo (V x) +{ + V y = __builtin_ia32_andpd (x, u.v); + V z = __builtin_ia32_subpd (x, y); + return __builtin_ia32_mulpd (y, z); +} + +void +test (V *x) +{ + V a = { 2.1, 2.1 }; + *x = foo (foo (a)); +} + +int +main () +{ + test (&u.v); + if (u.m[0] != 0x3acbf487f0a30550ULL || u.m[1] != u.m[0]) + abort (); + return 0; +} |