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| author | Jakub Jelinek <jakub@redhat.com> | 2018-01-01 00:50:32 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2018-01-01 00:50:32 +0100 |
| commit | d235d09b7c86a2955bebdcb1991cd21758bcc21b (patch) | |
| tree | e41ca71ae9127a80fbb1b4670ce2d762e50ef7a1 /gcc | |
| parent | 1f01b45746bba314752b035821f4fca9dea21f78 (diff) | |
| download | gcc-d235d09b7c86a2955bebdcb1991cd21758bcc21b.zip gcc-d235d09b7c86a2955bebdcb1991cd21758bcc21b.tar.gz gcc-d235d09b7c86a2955bebdcb1991cd21758bcc21b.tar.bz2 | |
re PR middle-end/83623 (ICE: in convert_move, at expr.c:248 with -march=knl and 16bit vector bswap/rotate)
PR middle-end/83623
* expmed.c (expand_shift_1): For 2-byte rotates by BITS_PER_UNIT,
check for bswap in mode rather than HImode and use that in expand_unop
too.
* gcc.dg/pr83623.c: New test.
From-SVN: r256051
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/expmed.c | 5 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 3 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr83623.c | 12 |
4 files changed, 24 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index c2913d2..548bb17 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2018-01-01 Jakub Jelinek <jakub@redhat.com> + + PR middle-end/83623 + * expmed.c (expand_shift_1): For 2-byte rotates by BITS_PER_UNIT, + check for bswap in mode rather than HImode and use that in expand_unop + too. + 2017-12-31 Jakub Jelinek <jakub@redhat.com> PR target/83536 diff --git a/gcc/expmed.c b/gcc/expmed.c index 6b22946..55bb353 100644 --- a/gcc/expmed.c +++ b/gcc/expmed.c @@ -2490,9 +2490,8 @@ expand_shift_1 (enum tree_code code, machine_mode mode, rtx shifted, && CONST_INT_P (op1) && INTVAL (op1) == BITS_PER_UNIT && GET_MODE_SIZE (scalar_mode) == 2 - && optab_handler (bswap_optab, HImode) != CODE_FOR_nothing) - return expand_unop (HImode, bswap_optab, shifted, NULL_RTX, - unsignedp); + && optab_handler (bswap_optab, mode) != CODE_FOR_nothing) + return expand_unop (mode, bswap_optab, shifted, NULL_RTX, unsignedp); if (op1 == const0_rtx) return shifted; diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 43f137e..f89ae2e 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,5 +1,8 @@ 2018-01-01 Jakub Jelinek <jakub@redhat.com> + PR middle-end/83623 + * gcc.dg/pr83623.c: New test. + * gcc.target/i386/i386.exp (check_effective_target_avx512vpopcntdqvl): New proc. * gcc.target/i386/avx512vpopcntdqvl-vpopcntd-1.c: Use diff --git a/gcc/testsuite/gcc.dg/pr83623.c b/gcc/testsuite/gcc.dg/pr83623.c new file mode 100644 index 0000000..5d62c04 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr83623.c @@ -0,0 +1,12 @@ +/* PR middle-end/83623 */ +/* { dg-do compile } */ +/* { dg-options "-O2" } */ +/* { dg-additional-options "-mmovbe" { target i?86-*-* x86_64-*-* } } */ + +unsigned short __attribute__ ((__vector_size__ (16))) x; + +void +foo (void) +{ + x = x << 8 | x >> 8; +} |