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| author | Shuxin Yang <shuxin.llvm@gmail.com> | 2013-09-20 23:12:57 +0000 |
|---|---|---|
| committer | Shuxin Yang <shuxin.llvm@gmail.com> | 2013-09-20 23:12:57 +0000 |
| commit | d93e8a06b2ca09ab18f390cd514b7443e2e571f7 (patch) | |
| tree | 6126b1cad8f4f9182c944c0d697bb264c0348136 /test/Transforms/GVN/rle-semidominated.ll | |
| parent | 4a20092e638935be11e87d33f7e5b35140162bd2 (diff) | |
| download | external_llvm-d93e8a06b2ca09ab18f390cd514b7443e2e571f7.zip external_llvm-d93e8a06b2ca09ab18f390cd514b7443e2e571f7.tar.gz external_llvm-d93e8a06b2ca09ab18f390cd514b7443e2e571f7.tar.bz2 | |
Resurrect r191017 " GVN proceeds in the presence of dead code" plus a fix to PR17307 & 17308.
The problem of r191017 is that when GVN fabricate a val-number for a dead instruction (in order
to make following expr-PRE happy), it forget to fabricate a leader-table entry for it as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191118 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/GVN/rle-semidominated.ll')
| -rw-r--r-- | test/Transforms/GVN/rle-semidominated.ll | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/test/Transforms/GVN/rle-semidominated.ll b/test/Transforms/GVN/rle-semidominated.ll index 71aa548..923cd03 100644 --- a/test/Transforms/GVN/rle-semidominated.ll +++ b/test/Transforms/GVN/rle-semidominated.ll @@ -1,9 +1,10 @@ ; RUN: opt < %s -basicaa -gvn -S | grep "DEAD = phi i32 " -define i32 @main(i32* %p) { +define i32 @main(i32* %p, i32 %x, i32 %y) { block1: %z = load i32* %p - br i1 true, label %block2, label %block3 + %cmp = icmp eq i32 %x, %y + br i1 %cmp, label %block2, label %block3 block2: br label %block4 |