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-rw-r--r--test/Transforms/DCE/calls-errno.ll4
1 files changed, 4 insertions, 0 deletions
diff --git a/test/Transforms/DCE/calls-errno.ll b/test/Transforms/DCE/calls-errno.ll
index 22ea04aa8f363..415caae0fe60f 100644
--- a/test/Transforms/DCE/calls-errno.ll
+++ b/test/Transforms/DCE/calls-errno.ll
@@ -72,6 +72,10 @@ entry:
; CHECK-NEXT: %cos2 = call double @cos(double 0x7FF0000000000000)
%cos2 = call double @cos(double 0x7FF0000000000000)
+; cos(0) nobuiltin may have side effects
+; CHECK-NEXT: %cos3 = call double @cos(double 0.000000e+00)
+ %cos3 = call double @cos(double 0.000000e+00) nobuiltin
+
; pow(0, 1) is 0
%pow1 = call double @pow(double 0x7FF0000000000000, double 1.000000e+00)