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Fixed an optimizer problem: A branch into a list of at least two branches

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pointing to themselves caused the optimizer to loop forever.


git-svn-id: svn://svn.cc65.org/cc65/trunk@3907 b7a2c559-68d2-44c3-8de9-860c34a00d81
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uz 2009-01-12 19:48:28 +00:00
parent 8c8e0b131f
commit df341b6551
1 changed files with 1 additions and 10 deletions
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11
src/cc65/coptind.c
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@ -406,17 +406,12 @@ unsigned OptJumpCascades (CodeSeg* S)
/* Remember, we had changes */ /* Remember, we had changes */
++Changes; ++Changes;
/* Done */
continue;
}
/* Check if both are conditional branches, and the condition of /* Check if both are conditional branches, and the condition of
* the second is the inverse of that of the first. In this case, * the second is the inverse of that of the first. In this case,
* the second branch will never be taken, and we may jump directly * the second branch will never be taken, and we may jump directly
* to the instruction behind this one. * to the instruction behind this one.
*/ */
if ((E->Info & OF_CBRA) != 0 && (N->Info & OF_CBRA) != 0) { } else if ((E->Info & OF_CBRA) != 0 && (N->Info & OF_CBRA) != 0) {
CodeEntry* X; /* Instruction behind N */ CodeEntry* X; /* Instruction behind N */
CodeLabel* LX; /* Label attached to X */ CodeLabel* LX; /* Label attached to X */
@ -447,10 +442,6 @@ unsigned OptJumpCascades (CodeSeg* S)
/* Remember, we had changes */ /* Remember, we had changes */
++Changes; ++Changes;
/* Done */
continue;
} }
} }