Add a test case for PR3779: when to promote the function return value.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67702 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/X86/sext-ret-val.ll b/test/CodeGen/X86/sext-ret-val.ll
new file mode 100644 (file)
index 0000000..946e6c7
--- /dev/null
+++ b/test/CodeGen/X86/sext-ret-val.ll
@@ -0,0 +1,16 @@
+; RUN: llvm-as < %s | llc -march=x86 | grep movzbl | count 1
+; rdar://6699246
+
+define signext i8 @t1(i8* %A) nounwind readnone ssp {
+entry:
+        %0 = icmp ne i8* %A, null
+        %1 = zext i1 %0 to i8
+        ret i8 %1
+}
+
+define i8 @t2(i8* %A) nounwind readnone ssp {
+entry:
+        %0 = icmp ne i8* %A, null
+        %1 = zext i1 %0 to i8
+        ret i8 %1
+}