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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 | |
| 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
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/expmed.c | 8 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr59261.c | 17 |
4 files changed, 36 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 93a502f..5487d5c 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2014-02-04 Jakub Jelinek <jakub@redhat.com> + + 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. + 2014-02-04 Richard Biener <rguenther@suse.de> PR tree-optimization/60012 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); diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index f630cd9..048a029 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2014-02-04 Jakub Jelinek <jakub@redhat.com> + + PR middle-end/59261 + * gcc.dg/pr59261.c: New test. + 2014-02-04 Richard Biener <rguenther@suse.de> PR tree-optimization/60012 diff --git a/gcc/testsuite/gcc.dg/pr59261.c b/gcc/testsuite/gcc.dg/pr59261.c new file mode 100644 index 0000000..6b912de --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr59261.c @@ -0,0 +1,17 @@ +/* PR middle-end/59261 */ +/* { dg-do compile } */ +/* { dg-options "-O2" } */ + +typedef signed char V __attribute__((vector_size (8))); + +void +foo (V *a, V *b) +{ + *a = *b * 3; +} + +void +bar (V *a, V *b) +{ + *a = *b * 4; +} |