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| author | Richard Henderson <rth@redhat.com> | 2001-08-05 23:41:46 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2001-08-05 23:41:46 -0700 |
| commit | 78d56e8b0a6fe5d1ab79028bb1f0c3e6dbc27bbb (patch) | |
| tree | e2be23f16017f416dd7b43182da14b835fef89a4 /gcc/local-alloc.c | |
| parent | 39f95a2c8e36fcfbaaed01fda58429b7f536cefa (diff) | |
| download | gcc-78d56e8b0a6fe5d1ab79028bb1f0c3e6dbc27bbb.zip gcc-78d56e8b0a6fe5d1ab79028bb1f0c3e6dbc27bbb.tar.gz gcc-78d56e8b0a6fe5d1ab79028bb1f0c3e6dbc27bbb.tar.bz2 | |
local-alloc.c (update_equiv_regs): Do not move insns that can throw.
* local-alloc.c (update_equiv_regs): Do not move insns that
can throw.
From-SVN: r44655
Diffstat (limited to 'gcc/local-alloc.c')
| -rw-r--r-- | gcc/local-alloc.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/local-alloc.c b/gcc/local-alloc.c index a068db8..c987190 100644 --- a/gcc/local-alloc.c +++ b/gcc/local-alloc.c @@ -1102,6 +1102,12 @@ update_equiv_regs () abort (); equiv_insn = XEXP (reg_equiv[regno].init_insns, 0); + /* We may not move instructions that can throw, since + that changes basic block boundaries and we are not + prepared to adjust the CFG to match. */ + if (can_throw_internal (equiv_insn)) + continue; + if (asm_noperands (PATTERN (equiv_insn)) < 0 && validate_replace_rtx (regno_reg_rtx[regno], reg_equiv[regno].src, insn)) |