diff options
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/local-alloc.c | 6 |
2 files changed, 11 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 293b81df950..0e35ab36cf8 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2001-08-05 Richard Henderson <rth@redhat.com> + + * local-alloc.c (update_equiv_regs): Do not move insns that + can throw. + 2001-08-05 Jan Hubicka <jh@suse.cz> * Makefile.in (reload1.o): Add dedendancy on except.h diff --git a/gcc/local-alloc.c b/gcc/local-alloc.c index a068db8385d..c987190698e 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)) |