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| author | Bob Wilson <bob.wilson@apple.com> | 2010-06-26 04:27:33 +0000 |
|---|---|---|
| committer | Bob Wilson <bob.wilson@apple.com> | 2010-06-26 04:27:33 +0000 |
| commit | ccd9bcca14e7046b7078cdf472a9185b86cdf07d (patch) | |
| tree | 9f9a66e399e80712cb1380e98ed9bfcde6d24c3b /test/CodeGen/Thumb2/thumb2-ifcvt3.ll | |
| parent | 52e4a0a074b758ad3dbf6841b249aaf3baf08f28 (diff) | |
| download | external_llvm-ccd9bcca14e7046b7078cdf472a9185b86cdf07d.zip external_llvm-ccd9bcca14e7046b7078cdf472a9185b86cdf07d.tar.gz external_llvm-ccd9bcca14e7046b7078cdf472a9185b86cdf07d.tar.bz2 | |
Clean up some problems with extra CFG edges being introduced during
if-conversion. The RemoveExtraEdges function doesn't work for blocks that
end with unanalyzable branches, so in those cases, the "extra" edges must
be explicitly removed. The CopyAndPredicateBlock and MergeBlocks methods
can also avoid copying successor edges due to branches that have already
been removed. The latter case is especially helpful when MergeBlocks is
called for handling "diamond" if-conversions, where otherwise you can end
up with some weird intermediate states in the CFG. Unfortunately I've
been unable to find cases where this cleanup actually makes a significant
difference in the code. There is one test where we manage to remove an
empty block at the end of a function. Radar 6911268.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106939 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/Thumb2/thumb2-ifcvt3.ll')
| -rw-r--r-- | test/CodeGen/Thumb2/thumb2-ifcvt3.ll | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/test/CodeGen/Thumb2/thumb2-ifcvt3.ll b/test/CodeGen/Thumb2/thumb2-ifcvt3.ll index e465c00..cc2ef14 100644 --- a/test/CodeGen/Thumb2/thumb2-ifcvt3.ll +++ b/test/CodeGen/Thumb2/thumb2-ifcvt3.ll @@ -23,7 +23,7 @@ bb52: ; preds = %newFuncRoot ; CHECK: movne ; CHECK: moveq ; CHECK: pop -; CHECK-NEXT: LBB0_1: +; CHECK-NEXT: @ BB#1: %0 = load i64* @posed, align 4 ; <i64> [#uses=3] %1 = sub i64 %0, %.reload78 ; <i64> [#uses=1] %2 = ashr i64 %1, 1 ; <i64> [#uses=3] |