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| author | ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4> | 2014-10-29 21:51:53 +0000 |
|---|---|---|
| committer | ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4> | 2014-10-29 21:51:53 +0000 |
| commit | 2c8cd08d9b9fac08aa851f5cd988f76697dff78e (patch) | |
| tree | c958e3456becf6e8602adf10b8ac7c5257e9a3b9 | |
| parent | d79ab8c787f4ba3561f9d43bafa7d5218f7afe69 (diff) | |
| download | ppe42-gcc-2c8cd08d9b9fac08aa851f5cd988f76697dff78e.tar.gz ppe42-gcc-2c8cd08d9b9fac08aa851f5cd988f76697dff78e.zip | |
[AArch64] Restore recog state after finding pre-madd instruction
* config/aarch64/aarch64.c (aarch64_madd_needs_nop): Restore
recog state after aarch64_prev_real_insn call.
* gcc.target/aarch64/madd_after_asm_1.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_9-branch@216853 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/aarch64/aarch64.c | 4 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/aarch64/madd_after_asm_1.c | 14 |
4 files changed, 27 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index a1c65cb4b20..2176804bfc9 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2014-10-29 Kyrylo Tkachov <kyrylo.tkachov@arm.com> + + * config/aarch64/aarch64.c (aarch64_madd_needs_nop): Restore + recog state after aarch64_prev_real_insn call. + 2014-10-27 Guozhi Wei <carrot@google.com> PR tree-optimization/63530 diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c index 34354d48124..52c04717e8e 100644 --- a/gcc/config/aarch64/aarch64.c +++ b/gcc/config/aarch64/aarch64.c @@ -6557,6 +6557,10 @@ aarch64_madd_needs_nop (rtx insn) return false; prev = aarch64_prev_real_insn (insn); + /* aarch64_prev_real_insn can call recog_memoized on insns other than INSN. + Restore recog state to INSN to avoid state corruption. */ + extract_constrain_insn_cached (insn); + if (!prev) return false; diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 9b716323430..fbc0eaca613 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2014-10-29 Kyrylo Tkachov <kyrylo.tkachov@arm.com> + + * gcc.target/aarch64/madd_after_asm_1.c: New test. + 2014-10-27 Guozhi Wei <carrot@google.com> PR tree-optimization/63530 diff --git a/gcc/testsuite/gcc.target/aarch64/madd_after_asm_1.c b/gcc/testsuite/gcc.target/aarch64/madd_after_asm_1.c new file mode 100644 index 00000000000..523941d4792 --- /dev/null +++ b/gcc/testsuite/gcc.target/aarch64/madd_after_asm_1.c @@ -0,0 +1,14 @@ +/* { dg-do assemble } */ +/* { dg-options "-O2 -mfix-cortex-a53-835769" } */ + +int +test (int a, double b, int c, int d, int e) +{ + double result; + __asm__ __volatile ("// %0, %1" + : "=w" (result) + : "0" (b) + : /* No clobbers */ + ); + return c * d + e; +} |
