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| author | Jakub Jelinek <jakub@redhat.com> | 2018-06-20 16:51:04 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2018-06-20 16:51:04 +0200 |
| commit | 125fe9abf3f205bbc2c36fbcb981b81b522466ca (patch) | |
| tree | 6dc80876fb8dbc1fb96fd0405677f44dbd1c36b4 /gcc | |
| parent | c81a5aecc58eb17bc951d0306945c029439b5fcb (diff) | |
| download | gcc-125fe9abf3f205bbc2c36fbcb981b81b522466ca.zip gcc-125fe9abf3f205bbc2c36fbcb981b81b522466ca.tar.gz gcc-125fe9abf3f205bbc2c36fbcb981b81b522466ca.tar.bz2 | |
re PR debug/86194 (ICE: SIGSEGV in avoid_constant_pool_reference (simplify-rtx.c:215) with -O -g -mavx512bw)
PR debug/86194
* var-tracking.c (use_narrower_mode_test): Check if shift amount can
be narrowed.
* gcc.target/i386/pr86194.c: New test.
From-SVN: r261807
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 3 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/pr86194.c | 24 | ||||
| -rw-r--r-- | gcc/var-tracking.c | 18 |
4 files changed, 49 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 5d267eb..7b399f1 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,9 @@ 2018-06-20 Jakub Jelinek <jakub@redhat.com> + PR debug/86194 + * var-tracking.c (use_narrower_mode_test): Check if shift amount can + be narrowed. + PR tree-optimization/86231 * tree-vrp.c (union_ranges): For ( [ ) ] or ( )[ ] range and anti-range don't overwrite *vr0min before using it to compute *vr0max. diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 5b3de8d..ce89b33 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,5 +1,8 @@ 2018-06-20 Jakub Jelinek <jakub@redhat.com> + PR debug/86194 + * gcc.target/i386/pr86194.c: New test. + PR tree-optimization/86231 * gcc.dg/tree-ssa/vrp119.c: New test. * gcc.c-torture/execute/pr86231.c: New test. diff --git a/gcc/testsuite/gcc.target/i386/pr86194.c b/gcc/testsuite/gcc.target/i386/pr86194.c new file mode 100644 index 0000000..0993155 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr86194.c @@ -0,0 +1,24 @@ +/* PR debug/86194 */ +/* { dg-do compile { target int128 } } */ +/* { dg-options "-O -g -mavx512bw" } */ + +typedef unsigned U __attribute__ ((vector_size (64))); +typedef unsigned long V __attribute__ ((vector_size (64))); +typedef unsigned __int128 W __attribute__ ((vector_size (64))); + +U u; + +W +bar (W w) +{ + U k = u; + w <<= (W)(U) { 5, 3, 3, 0, 7, 3, 1, 3, k[7] }; + k += (U) { -(char)w[3] } != k; + return (W)k + w; +} + +void +foo (void) +{ + u = (U){ bar ((W)(V) { 0, ~0, 0, 0, 0, 0, ~0 })[0] }; +} diff --git a/gcc/var-tracking.c b/gcc/var-tracking.c index 2bbde92..8e80096 100644 --- a/gcc/var-tracking.c +++ b/gcc/var-tracking.c @@ -964,6 +964,24 @@ use_narrower_mode_test (rtx x, const_rtx subreg) case MULT: break; case ASHIFT: + if (GET_MODE (XEXP (x, 1)) != VOIDmode) + { + enum machine_mode mode = GET_MODE (subreg); + rtx op1 = XEXP (x, 1); + enum machine_mode op1_mode = GET_MODE (op1); + if (GET_MODE_PRECISION (as_a <scalar_int_mode> (mode)) + < GET_MODE_PRECISION (as_a <scalar_int_mode> (op1_mode))) + { + poly_uint64 byte = subreg_lowpart_offset (mode, op1_mode); + if (GET_CODE (op1) == SUBREG || GET_CODE (op1) == CONCAT) + { + if (!simplify_subreg (mode, op1, op1_mode, byte)) + return false; + } + else if (!validate_subreg (mode, op1_mode, op1, byte)) + return false; + } + } iter.substitute (XEXP (x, 0)); break; default: |