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-rw-r--r--test/CodeGen/X86/2010-03-05-EFLAGS-Redef.ll49
1 files changed, 49 insertions, 0 deletions
diff --git a/test/CodeGen/X86/2010-03-05-EFLAGS-Redef.ll b/test/CodeGen/X86/2010-03-05-EFLAGS-Redef.ll
new file mode 100644
index 0000000..3cca10e
--- /dev/null
+++ b/test/CodeGen/X86/2010-03-05-EFLAGS-Redef.ll
@@ -0,0 +1,49 @@
+; RUN: llc < %s -verify-machineinstrs
+;
+; This test case is transformed into a single basic block by the machine
+; branch folding pass. That makes a complete mess of the %EFLAGS liveness, but
+; we don't care about liveness this late anyway.
+
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
+target triple = "x86_64-apple-darwin10.2"
+
+define i32 @main(i32 %argc, i8** nocapture %argv) ssp {
+entry:
+ br i1 undef, label %bb, label %bb2
+
+bb: ; preds = %entry
+ br label %bb2
+
+bb2: ; preds = %bb, %entry
+ br i1 undef, label %bb3, label %bb5
+
+bb3: ; preds = %bb2
+ br label %bb5
+
+bb5: ; preds = %bb3, %bb2
+ br i1 undef, label %bb.nph239, label %bb8
+
+bb.nph239: ; preds = %bb5
+ unreachable
+
+bb8: ; preds = %bb5
+ br i1 undef, label %bb.nph237, label %bb47
+
+bb.nph237: ; preds = %bb8
+ unreachable
+
+bb47: ; preds = %bb8
+ br i1 undef, label %bb49, label %bb48
+
+bb48: ; preds = %bb47
+ unreachable
+
+bb49: ; preds = %bb47
+ br i1 undef, label %bb51, label %bb50
+
+bb50: ; preds = %bb49
+ ret i32 0
+
+bb51: ; preds = %bb49
+ ret i32 0
+}