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| author | Jakub Jelinek <jakub@redhat.com> | 2016-11-25 19:56:50 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2016-11-25 19:56:50 +0100 |
| commit | ad7a69db52391cf141d0f6da6042a5fc7d8d54c3 (patch) | |
| tree | 4e8bede402cccf7bce29a92ae701c2921ec7488a /gcc/simplify-rtx.c | |
| parent | c620cf89a822c4c6a7d56ea26a618a472252b2f6 (diff) | |
| download | gcc-ad7a69db52391cf141d0f6da6042a5fc7d8d54c3.zip gcc-ad7a69db52391cf141d0f6da6042a5fc7d8d54c3.tar.gz gcc-ad7a69db52391cf141d0f6da6042a5fc7d8d54c3.tar.bz2 | |
re PR rtl-optimization/78526 (ICE: in decompose, at rtl.h:2117 with -g -mavx512bw)
PR rtl-optimization/78526
* simplify-rtx.c (simplify_immed_subreg): Don't use wi::extract_uhwi
beyond val's precision.
* gcc.dg/pr78526.c: New test.
From-SVN: r242882
Diffstat (limited to 'gcc/simplify-rtx.c')
| -rw-r--r-- | gcc/simplify-rtx.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index fde2443..f6131d4 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -5740,8 +5740,9 @@ simplify_immed_subreg (machine_mode outermode, rtx op, { rtx_mode_t val = rtx_mode_t (el, innermode); unsigned char extend = wi::sign_mask (val); + int prec = wi::get_precision (val); - for (i = 0; i < elem_bitsize; i += value_bit) + for (i = 0; i < prec && i < elem_bitsize; i += value_bit) *vp++ = wi::extract_uhwi (val, i, value_bit); for (; i < elem_bitsize; i += value_bit) *vp++ = extend; |