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Diffstat (limited to 'test/CodeGen/X86/2009-03-23-LinearScanBug.ll')
| -rw-r--r-- | test/CodeGen/X86/2009-03-23-LinearScanBug.ll | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/test/CodeGen/X86/2009-03-23-LinearScanBug.ll b/test/CodeGen/X86/2009-03-23-LinearScanBug.ll new file mode 100644 index 0000000..0a4501e --- /dev/null +++ b/test/CodeGen/X86/2009-03-23-LinearScanBug.ll @@ -0,0 +1,23 @@ +; RUN: llvm-as < %s | llc -mtriple=i386-apple-darwin -fast + +define fastcc void @optimize_bit_field() nounwind { +bb4: + %a = load i32* null ; <i32> [#uses=1] + %s = load i32* getelementptr (i32* null, i32 1) ; <i32> [#uses=1] + %z = load i32* getelementptr (i32* null, i32 2) ; <i32> [#uses=1] + %r = bitcast i32 0 to i32 ; <i32> [#uses=1] + %q = trunc i32 %z to i8 ; <i8> [#uses=1] + %b = icmp eq i8 0, %q ; <i1> [#uses=1] + br i1 %b, label %bb73, label %bb72 + +bb72: ; preds = %bb4 + %f = tail call fastcc i32 @gen_lowpart(i32 %r, i32 %a) nounwind ; <i32> [#uses=1] + br label %bb73 + +bb73: ; preds = %bb72, %bb4 + %y = phi i32 [ %f, %bb72 ], [ %s, %bb4 ] ; <i32> [#uses=1] + store i32 %y, i32* getelementptr (i32* null, i32 3) + unreachable +} + +declare fastcc i32 @gen_lowpart(i32, i32) nounwind |