diff options
| author | Kyrylo Tkachov <kyrylo.tkachov@arm.com> | 2015-11-06 12:04:15 +0000 |
|---|---|---|
| committer | Kyrylo Tkachov <kyrylo.tkachov@arm.com> | 2015-11-06 12:04:15 +0000 |
| commit | c6f705e38ad079ac07e8228c70c7392ee451374e (patch) | |
| tree | abfaa95dcf19408483ccfe4f9c380784daa56057 | |
| parent | f9c909568edae43febaf82676539c849d8c6025b (diff) | |
[ARM/AArch64] PR 68088: Fix RTL checking ICE due to subregs inside accumulator forwarding check
PR target/68088
* config/arm/aarch-common.c (aarch_accumulator_forwarding): Strip
subregs from accumulator and make sure it's a register.
* gcc.dg/pr68088_1.c: New test.
git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@229845 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/arm/aarch-common.c | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr68088_1.c | 15 |
4 files changed, 32 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 9adcd20d145..3966f515860 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2015-11-06 Kyrylo Tkachov <kyrylo.tkachov@arm.com> + + PR target/68088 + * config/arm/aarch-common.c (aarch_accumulator_forwarding): Strip + subregs from accumulator and make sure it's a register. + 2015-11-06 Simon Dardis <simon.dardis@imgtec.com> * config/mips/loongson.md (vec_loongson_extract_lo_<mode>): New, extract diff --git a/gcc/config/arm/aarch-common.c b/gcc/config/arm/aarch-common.c index a940a0232f8..e6668d5742c 100644 --- a/gcc/config/arm/aarch-common.c +++ b/gcc/config/arm/aarch-common.c @@ -460,6 +460,12 @@ aarch_accumulator_forwarding (rtx_insn *producer, rtx_insn *consumer) return 0; } + if (GET_CODE (accumulator) == SUBREG) + accumulator = SUBREG_REG (accumulator); + + if (!REG_P (accumulator)) + return 0; + return (REGNO (dest) == REGNO (accumulator)); } diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 3d1834dfb81..3bf8cf1bca0 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2015-11-06 Kyrylo Tkachov <kyrylo.tkachov@arm.com> + + PR target/68088 + * gcc.dg/pr68088_1.c: New test. + 2015-11-06 Richard Biener <rguenther@suse.de> * gcc.dg/vect/bb-slp-38.c: New testcase. diff --git a/gcc/testsuite/gcc.dg/pr68088_1.c b/gcc/testsuite/gcc.dg/pr68088_1.c new file mode 100644 index 00000000000..49c6aa14543 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr68088_1.c @@ -0,0 +1,15 @@ +/* { dg-do compile } */ +/* { dg-options "-O2" } */ + +void bar (unsigned long); + +void +foo (unsigned long aul, unsigned m, unsigned i) +{ + while (1) + { + aul += i; + i = aul % m; + bar (aul); + } +} |