diff options
| -rw-r--r-- | lib/Analysis/LazyValueInfo.cpp | 4 | ||||
| -rw-r--r-- | test/Transforms/CorrelatedValuePropagation/2010-09-02-Trunc.ll | 25 |
2 files changed, 25 insertions, 4 deletions
diff --git a/lib/Analysis/LazyValueInfo.cpp b/lib/Analysis/LazyValueInfo.cpp index f6f715e4df..ff98bf9771 100644 --- a/lib/Analysis/LazyValueInfo.cpp +++ b/lib/Analysis/LazyValueInfo.cpp @@ -173,10 +173,6 @@ public: assert(isUndefined()); if (NewR.isEmptySet()) return markOverdefined(); - else if (NewR.isFullSet()) { - Tag = undefined; - return true; - } Tag = constantrange; Range = NewR; diff --git a/test/Transforms/CorrelatedValuePropagation/2010-09-02-Trunc.ll b/test/Transforms/CorrelatedValuePropagation/2010-09-02-Trunc.ll new file mode 100644 index 0000000000..f2553dc2ca --- /dev/null +++ b/test/Transforms/CorrelatedValuePropagation/2010-09-02-Trunc.ll @@ -0,0 +1,25 @@ +; RUN: opt -S < %s -correlated-propagation | FileCheck %s + +; CHECK: @check +define i16 @test(i32 %a, i1 %b) { +entry: + %c = icmp eq i32 %a, 0 + br i1 %c, label %left, label %right + +right: + %d = trunc i32 %a to i1 + br label %merge + +left: + br i1 %b, label %merge, label %other + +other: + ret i16 23 + +merge: + %f = phi i1 [%b, %left], [%d, %right] +; CHECK: select i1 %f, i16 1, i16 0 + %h = select i1 %f, i16 1, i16 0 +; CHECK: ret i16 %h + ret i16 %h +}
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