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| author | Jakub Jelinek <jakub@redhat.com> | 2014-02-04 10:36:18 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2014-02-04 10:36:18 +0100 |
| commit | 66b3ed5f3da50ca525401c340279f76679bd2c87 (patch) | |
| tree | 2a95d5d3aa1b211a77a06fcecf189456d3381d9f /gcc/expmed.c | |
| parent | 5961d779d0f20b61363091ac7849d457cc80275d (diff) | |
| download | gcc-66b3ed5f3da50ca525401c340279f76679bd2c87.zip gcc-66b3ed5f3da50ca525401c340279f76679bd2c87.tar.gz gcc-66b3ed5f3da50ca525401c340279f76679bd2c87.tar.bz2 | |
re PR middle-end/59261 (FAIL: gcc.dg/vect/bb-slp-26.c -flto -ffat-lto-objects (internal compiler error))
PR middle-end/59261
* expmed.c (expand_mult): For MODE_VECTOR_INT multiplication
if there is no vashl<mode>3 or ashl<mode>3 insn, skip_synth.
* gcc.dg/pr59261.c: New test.
From-SVN: r207456
Diffstat (limited to 'gcc/expmed.c')
| -rw-r--r-- | gcc/expmed.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/expmed.c b/gcc/expmed.c index 8f4b008..7c1c979 100644 --- a/gcc/expmed.c +++ b/gcc/expmed.c @@ -3136,6 +3136,14 @@ expand_mult (enum machine_mode mode, rtx op0, rtx op1, rtx target, if (do_trapv) goto skip_synth; + /* If mode is integer vector mode, check if the backend supports + vector lshift (by scalar or vector) at all. If not, we can't use + synthetized multiply. */ + if (GET_MODE_CLASS (mode) == MODE_VECTOR_INT + && optab_handler (vashl_optab, mode) == CODE_FOR_nothing + && optab_handler (ashl_optab, mode) == CODE_FOR_nothing) + goto skip_synth; + /* These are the operations that are potentially turned into a sequence of shifts and additions. */ mode_bitsize = GET_MODE_UNIT_BITSIZE (mode); |