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-rw-r--r--test/Transforms/InstCombine/2010-07-19-sqrt.ll16
1 files changed, 16 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/2010-07-19-sqrt.ll b/test/Transforms/InstCombine/2010-07-19-sqrt.ll
new file mode 100644
index 0000000000..6505382048
--- /dev/null
+++ b/test/Transforms/InstCombine/2010-07-19-sqrt.ll
@@ -0,0 +1,16 @@
+; RUN: opt -S -instcombine %s | FileCheck %s
+
+define float @foo(float %x) nounwind readnone ssp {
+entry:
+; CHECK-NOT: fpext
+; CHECK-NOT: sqrt(
+; CHECK: sqrtf(
+; CHECK-NOT: fptrunc
+ %conv = fpext float %x to double ; <double> [#uses=1]
+ %call = tail call double @sqrt(double %conv) nounwind ; <double> [#uses=1]
+ %conv1 = fptrunc double %call to float ; <float> [#uses=1]
+; CHECK: ret float
+ ret float %conv1
+}
+
+declare double @sqrt(double) readnone