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author | Devang Patel <dpatel@apple.com> | 2007-09-18 01:54:42 +0000 |
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committer | Devang Patel <dpatel@apple.com> | 2007-09-18 01:54:42 +0000 |
commit | e3bfb888988b48934e1ed96d879f918a8b29f446 (patch) | |
tree | fbe7a1097183dd7cdad8c83e33476ec089b076d6 /test | |
parent | 6e19896999f9297db38e1a1a66d9bef0e2f09776 (diff) | |
download | external_llvm-e3bfb888988b48934e1ed96d879f918a8b29f446.zip external_llvm-e3bfb888988b48934e1ed96d879f918a8b29f446.tar.gz external_llvm-e3bfb888988b48934e1ed96d879f918a8b29f446.tar.bz2 |
Fix PR1657
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42075 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
-rw-r--r-- | test/Transforms/LICM/2007-09-17-PrompteValue.ll | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/test/Transforms/LICM/2007-09-17-PrompteValue.ll b/test/Transforms/LICM/2007-09-17-PrompteValue.ll new file mode 100644 index 0000000..acbbabf --- /dev/null +++ b/test/Transforms/LICM/2007-09-17-PrompteValue.ll @@ -0,0 +1,26 @@ +; ModuleID = 'PR1657.bc' +; Do not promote getelementptr because it may exposes load from a null pointer +; and store from a null pointer which are covered by +; icmp eq %struct.decision* null, null condition. +; RUN: llvm-as < %s | opt -licm | llvm-dis | not grep promoted + %struct.decision = type { i8, %struct.decision* } + +define i32 @main() { +entry: + br label %blah.i + +blah.i: ; preds = %cond_true.i, %entry + %tmp3.i = icmp eq %struct.decision* null, null ; <i1> [#uses=1] + br i1 %tmp3.i, label %clear_modes.exit, label %cond_true.i + +cond_true.i: ; preds = %blah.i + %tmp1.i = getelementptr %struct.decision* null, i32 0, i32 0 ; <i8*> [#uses=1] + store i8 0, i8* %tmp1.i + br label %blah.i + +clear_modes.exit: ; preds = %blah.i + call void @exit( i32 0 ) + unreachable +} + +declare void @exit(i32) |