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| author | Jakub Jelinek <jakub@redhat.com> | 2010-12-06 20:31:57 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2010-12-06 20:31:57 +0100 |
| commit | 628162eabeaddc4079107d467a55b1d0362e5cbd (patch) | |
| tree | 53bd105987061843ff244a107f951b1758a51fbd /gcc | |
| parent | 1c8b9983c4ea83e9dc9cc8b9043ab7bd57e8d25b (diff) | |
| download | gcc-628162eabeaddc4079107d467a55b1d0362e5cbd.zip gcc-628162eabeaddc4079107d467a55b1d0362e5cbd.tar.gz gcc-628162eabeaddc4079107d467a55b1d0362e5cbd.tar.bz2 | |
re PR target/43897 (IA-64 asm clobbers are ignored)
PR target/43897
* config/ia64/ia64.c (rtx_needs_barrier): Handle asm CLOBBER
as a store into that register.
* gcc.target/ia64/pr43897.c: New test.
From-SVN: r167516
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/config/ia64/ia64.c | 11 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 3 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/ia64/pr43897.c | 12 |
4 files changed, 30 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 48c60c0..cc1d2c6 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,9 @@ 2010-12-06 Jakub Jelinek <jakub@redhat.com> + PR target/43897 + * config/ia64/ia64.c (rtx_needs_barrier): Handle asm CLOBBER + as a store into that register. + PR tree-optimization/46528 PR debug/46338 * profile.c (branch_prob): Make sure last is never set to a debug diff --git a/gcc/config/ia64/ia64.c b/gcc/config/ia64/ia64.c index 0c2d20e..f789d00 100644 --- a/gcc/config/ia64/ia64.c +++ b/gcc/config/ia64/ia64.c @@ -6320,6 +6320,17 @@ rtx_needs_barrier (rtx x, struct reg_flags flags, int pred) break; case CLOBBER: + if (REG_P (XEXP (pat, 0)) + && extract_asm_operands (x) != NULL_RTX + && REGNO (XEXP (pat, 0)) != AR_UNAT_REGNUM) + { + new_flags.is_write = 1; + need_barrier |= rtx_needs_barrier (XEXP (pat, 0), + new_flags, pred); + new_flags = flags; + } + break; + case RETURN: break; diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index f64afd4..b0ed621 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,5 +1,8 @@ 2010-12-06 Jakub Jelinek <jakub@redhat.com> + PR target/43897 + * gcc.target/ia64/pr43897.c: New test. + PR debug/46771 * gcc.dg/pr46771.c: New test. diff --git a/gcc/testsuite/gcc.target/ia64/pr43897.c b/gcc/testsuite/gcc.target/ia64/pr43897.c new file mode 100644 index 0000000..fb73e86 --- /dev/null +++ b/gcc/testsuite/gcc.target/ia64/pr43897.c @@ -0,0 +1,12 @@ +/* PR target/43897 */ +/* { dg-do assemble } */ +/* { dg-options "-O2" } */ + +int +sub (int i) +{ + float tmp; + if (i) + __asm__ __volatile__ ("frcpa.s0 %0,p1=f0,f0":"=f" (tmp)::"p1"); + return i + 10; +} |