diff options
| -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/pr84989.c | 12 |
4 files changed, 26 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 41f4b3b..1fd6490 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2018-03-21 Jakub Jelinek <jakub@redhat.com> + + PR rtl-optimization/84989 + * simplify-rtx.c (simplify_unary_operation_1): Don't try to simplify + VEC_DUPLICATE with scalar result mode. + 2018-03-21 Martin Liska <mliska@suse.cz> PR ipa/84963 diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index 2e7aa5c..23244a1 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -1692,7 +1692,9 @@ simplify_unary_operation_1 (enum rtx_code code, machine_mode mode, rtx op) break; } - if (VECTOR_MODE_P (mode) && vec_duplicate_p (op, &elt)) + if (VECTOR_MODE_P (mode) + && vec_duplicate_p (op, &elt) + && code != VEC_DUPLICATE) { /* Try applying the operator to ELT and see if that simplifies. We can duplicate the result if so. diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 7e844e5..20e7dd9 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2018-03-21 Jakub Jelinek <jakub@redhat.com> + + PR rtl-optimization/84989 + * gcc.target/i386/pr84989.c: New test. + 2018-03-21 Christophe Lyon <christophe.lyon@linaro.org> * gcc.target/arm/pr82518.c: Require arm_neon_hw. diff --git a/gcc/testsuite/gcc.target/i386/pr84989.c b/gcc/testsuite/gcc.target/i386/pr84989.c new file mode 100644 index 0000000..10655d3 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr84989.c @@ -0,0 +1,12 @@ +/* PR rtl-optimization/84989 */ +/* { dg-do compile } */ +/* { dg-options "-O2 -mavx512f" } */ + +#include <x86intrin.h> + +__m512 +foo (float a, float *b) +{ + return _mm512_sub_ps (_mm512_broadcast_f32x4 (_mm_load_ps (b)), + _mm512_broadcast_f32x4 (_mm_set1_ps (a))); +} |