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authorDan Gohman <gohman@apple.com>2009-06-27 05:16:57 +0000
committerDan Gohman <gohman@apple.com>2009-06-27 05:16:57 +0000
commitfe174b69526af9c2ce6215418bb9f8c9e3af9ba6 (patch)
tree3b6a5699ce7a706840de19e2160bd127b452deb4 /llvm/test/Transforms/IndVarSimplify/phi-uses-value-multiple-times.ll
parentd17366ae72b68930bb961db2067e4d4438fdcf06 (diff)
downloadbcm5719-llvm-fe174b69526af9c2ce6215418bb9f8c9e3af9ba6.tar.gz
bcm5719-llvm-fe174b69526af9c2ce6215418bb9f8c9e3af9ba6.zip
When a value is used multiple times within a single PHI, instructions
inserted to replace that value must dominate all of of the basic blocks associated with the uses of the value in the PHI, not just one of them. llvm-svn: 74376
Diffstat (limited to 'llvm/test/Transforms/IndVarSimplify/phi-uses-value-multiple-times.ll')
-rw-r--r--llvm/test/Transforms/IndVarSimplify/phi-uses-value-multiple-times.ll33
1 files changed, 33 insertions, 0 deletions
diff --git a/llvm/test/Transforms/IndVarSimplify/phi-uses-value-multiple-times.ll b/llvm/test/Transforms/IndVarSimplify/phi-uses-value-multiple-times.ll
new file mode 100644
index 00000000000..7119cbbc05c
--- /dev/null
+++ b/llvm/test/Transforms/IndVarSimplify/phi-uses-value-multiple-times.ll
@@ -0,0 +1,33 @@
+; RUN: llvm-as < %s | opt -indvars
+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"
+
+@ue = external global i64
+
+define i32 @foo() nounwind {
+entry:
+ br label %bb38.i
+
+bb14.i27:
+ %t0 = load i64* @ue, align 8
+ %t1 = sub i64 %t0, %i.0.i35
+ %t2 = add i64 %t1, 1
+ br i1 undef, label %bb15.i28, label %bb19.i31
+
+bb15.i28:
+ br label %bb19.i31
+
+bb19.i31:
+ %y.0.i = phi i64 [ %t2, %bb15.i28 ], [ %t2, %bb14.i27 ]
+ br label %bb35.i
+
+bb35.i:
+ br i1 undef, label %bb37.i, label %bb14.i27
+
+bb37.i:
+ %t3 = add i64 %i.0.i35, 1
+ br label %bb38.i
+
+bb38.i:
+ %i.0.i35 = phi i64 [ 1, %entry ], [ %t3, %bb37.i ]
+ br label %bb35.i
+}
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