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| author | Jingyue Wu <jingyue@google.com> | 2015-10-01 03:51:44 +0000 |
|---|---|---|
| committer | Jingyue Wu <jingyue@google.com> | 2015-10-01 03:51:44 +0000 |
| commit | df1a1b113b557d99d828c38d2f0b2c72313fbd66 (patch) | |
| tree | 3dc9fa976a874fcd048abdf0077b82da3e31177e /llvm/test | |
| parent | 551c814e48d162634efaa31c7849059c62b53ecd (diff) | |
| download | bcm5719-llvm-df1a1b113b557d99d828c38d2f0b2c72313fbd66.tar.gz bcm5719-llvm-df1a1b113b557d99d828c38d2f0b2c72313fbd66.zip | |
[NaryReassociate] SeenExprs records WeakVH
Summary:
The instructions SeenExprs records may be deleted during rewriting.
FindClosestMatchingDominator should ignore these deleted instructions.
Fixes PR24301.
Reviewers: grosser
Subscribers: grosser, llvm-commits
Differential Revision: http://reviews.llvm.org/D13315
llvm-svn: 248983
Diffstat (limited to 'llvm/test')
| -rw-r--r-- | llvm/test/Transforms/NaryReassociate/pr24301.ll | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/llvm/test/Transforms/NaryReassociate/pr24301.ll b/llvm/test/Transforms/NaryReassociate/pr24301.ll new file mode 100644 index 00000000000..898707831f9 --- /dev/null +++ b/llvm/test/Transforms/NaryReassociate/pr24301.ll @@ -0,0 +1,14 @@ +; RUN: opt < %s -nary-reassociate -S | FileCheck %s + +define i32 @foo(i32 %tmp4) { +; CHECK-LABEL: @foo( +entry: + %tmp5 = add i32 %tmp4, 8 + %tmp13 = add i32 %tmp4, -128 ; deleted + %tmp14 = add i32 %tmp13, 8 ; => %tmp5 + -128 + %tmp21 = add i32 119, %tmp4 + ; do not rewrite %tmp23 against %tmp13 because %tmp13 is already deleted + %tmp23 = add i32 %tmp21, -128 +; CHECK: %tmp23 = add i32 %tmp21, -128 + ret i32 %tmp23 +} |
