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| author | Jiangning Liu <jiangning.liu@arm.com> | 2011-11-04 16:50:04 +0000 |
|---|---|---|
| committer | Joey Ye <jye2@gcc.gnu.org> | 2011-11-04 16:50:04 +0000 |
| commit | e98925f693e27eed776eb7ee8191003a97981d21 (patch) | |
| tree | ceaffa105c789fb7507175295cf5c3c25f297eaf /gcc | |
| parent | 92b4d64cd44cbf3ecdc9be35099ed8692e3fc7ab (diff) | |
| download | gcc-e98925f693e27eed776eb7ee8191003a97981d21.zip gcc-e98925f693e27eed776eb7ee8191003a97981d21.tar.gz gcc-e98925f693e27eed776eb7ee8191003a97981d21.tar.bz2 | |
re PR rtl-optimization/38644 (Optimization flag -O1 -fschedule-insns2 causes wrong code)
2011-11-04 Jiangning Liu <jiangning.liu@arm.com>
PR rtl-optimization/38644
* config/arm/arm.c (thumb1_expand_epilogue): Add memory barrier
for epilogue having stack adjustment.
testcase:
* gcc.target/arm/stack-red-zone.c: New.
From-SVN: r180964
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/arm/arm.c | 2 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/arm/stack-red-zone.c | 12 |
4 files changed, 25 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index d6e9551..2c2c154 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2011-11-04 Jiangning Liu <jiangning.liu@arm.com> + + PR rtl-optimization/38644 + * config/arm/arm.c (thumb1_expand_epilogue): Add memory barrier + for epilogue having stack adjustment. + 2011-11-04 Georg-Johann Lay <avr@gjlay.de> PR target/50931 diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index 5f0d562..6ef6f62 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -22216,6 +22216,8 @@ thumb1_expand_epilogue (void) gcc_assert (amount >= 0); if (amount) { + emit_insn (gen_blockage ()); + if (amount < 512) emit_insn (gen_addsi3 (stack_pointer_rtx, stack_pointer_rtx, GEN_INT (amount))); diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index d5a6ea5..f47a503 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2011-11-04 Jiangning Liu <jiangning.liu@arm.com> + + PR rtl-optimization/38644 + * gcc.target/arm/stack-red-zone.c: New. + 2011-11-04 Paolo Carlini <paolo.carlini@oracle.com> PR c++/48420 diff --git a/gcc/testsuite/gcc.target/arm/stack-red-zone.c b/gcc/testsuite/gcc.target/arm/stack-red-zone.c new file mode 100644 index 0000000..b9f0f99 --- /dev/null +++ b/gcc/testsuite/gcc.target/arm/stack-red-zone.c @@ -0,0 +1,12 @@ +/* No stack red zone. PR38644. */ +/* { dg-options "-mthumb -O2" } */ +/* { dg-final { scan-assembler "ldrb\[^\n\]*\\n\[\t \]*add\[\t \]*sp" } } */ + +extern int doStreamReadBlock (int *, char *, int size, int); + +char readStream (int *s) +{ + char c = 0; + doStreamReadBlock (s, &c, 1, *s); + return c; +} |