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| author | Richard Henderson <rth@cygnus.com> | 2000-05-22 01:33:34 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2000-05-22 01:33:34 -0700 |
| commit | 0dab8f8aa3ba781aeb8d6b6c49afe51e9dde78fa (patch) | |
| tree | cfabfb3f4a0c67b72c39f9ffdec4790fd1ae41a6 /gcc | |
| parent | a774e06ec746cce0d602bfbcfe294d5848e4db83 (diff) | |
| download | gcc-0dab8f8aa3ba781aeb8d6b6c49afe51e9dde78fa.zip gcc-0dab8f8aa3ba781aeb8d6b6c49afe51e9dde78fa.tar.gz gcc-0dab8f8aa3ba781aeb8d6b6c49afe51e9dde78fa.tar.bz2 | |
* jump.c (can_reverse_comparison_p): Be prepared for insn null.
From-SVN: r34077
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 1 | ||||
| -rw-r--r-- | gcc/jump.c | 6 |
2 files changed, 5 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 3c8be9e..1d5ee90 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -2,6 +2,7 @@ * simplify-rtx.c (simplify_ternary_operation): Try to simplify IF_THEN_ELSE to a setcc form. + * jump.c (can_reverse_comparison_p): Be prepared for insn null. 2000-05-21 Kaveh R. Ghazi <ghazi@caip.rutgers.edu> @@ -1775,8 +1775,7 @@ can_reverse_comparison_p (comparison, insn) #endif ) { - rtx prev = prev_nonnote_insn (insn); - rtx set; + rtx prev, set; /* First see if the condition code mode alone if enough to say we can reverse the condition. If not, then search backwards for a set of @@ -1788,6 +1787,9 @@ can_reverse_comparison_p (comparison, insn) && REVERSIBLE_CC_MODE (GET_MODE (arg0))) return 1; #endif + + if (! insn) + return 0; for (prev = prev_nonnote_insn (insn); prev != 0 && GET_CODE (prev) != CODE_LABEL; |