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| author | Chris Lattner <sabre@nondot.org> | 2008-10-29 17:46:26 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2008-10-29 17:46:26 +0000 |
| commit | f8131c99de2ac66be4307ae24f2db44d12bc9b3f (patch) | |
| tree | 4c917a1c21ef677a38c3d0e6b4859ecfea543c1f /test/Transforms/SimplifyCFG | |
| parent | 90e619afbef9886c65650d0464e3cc87deb8c298 (diff) | |
| download | llvm-f8131c99de2ac66be4307ae24f2db44d12bc9b3f.tar.gz llvm-f8131c99de2ac66be4307ae24f2db44d12bc9b3f.tar.bz2 llvm-f8131c99de2ac66be4307ae24f2db44d12bc9b3f.tar.xz | |
Fix PR2967 by not deleting volatile load/stores that occur before unreachable.
I don't really see this as being needed, but there is little harm from doing
it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58385 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/SimplifyCFG')
| -rw-r--r-- | test/Transforms/SimplifyCFG/trapping-load-unreachable.ll | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/test/Transforms/SimplifyCFG/trapping-load-unreachable.ll b/test/Transforms/SimplifyCFG/trapping-load-unreachable.ll new file mode 100644 index 0000000000..a73a82b369 --- /dev/null +++ b/test/Transforms/SimplifyCFG/trapping-load-unreachable.ll @@ -0,0 +1,19 @@ +; RUN: llvm-as < %s | opt -simplifycfg | llvm-dis | grep {volatile load} +; PR2967 + +target datalayout = +"e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32" +target triple = "i386-pc-linux-gnu" + +define void @foo(i32 %x) nounwind { +entry: + %0 = icmp eq i32 %x, 0 ; <i1> [#uses=1] + br i1 %0, label %bb, label %return + +bb: ; preds = %entry + %1 = volatile load i32* null ; <i32> [#uses=0] + unreachable + br label %return +return: ; preds = %entry + ret void +} |