add a test to ensure that argpromote of one argument doesn't

break the byval attr on some other argument.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46025 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/ArgumentPromotion/byval-2.ll b/test/Transforms/ArgumentPromotion/byval-2.ll
new file mode 100644 (file)
index 0000000..d625357
--- /dev/null
+++ b/test/Transforms/ArgumentPromotion/byval-2.ll
@@ -0,0 +1,26 @@
+; RUN: llvm-as < %s | opt -argpromotion | llvm-dis | grep -F {i32* byval} | count 2
+; Argpromote + scalarrepl should change this to passing the two integers by value.
+
+       %struct.ss = type { i32, i64 }
+
+define internal void @f(%struct.ss* byval  %b, i32* byval %X) nounwind  {
+entry:
+       %tmp = getelementptr %struct.ss* %b, i32 0, i32 0
+       %tmp1 = load i32* %tmp, align 4
+       %tmp2 = add i32 %tmp1, 1        
+       store i32 %tmp2, i32* %tmp, align 4
+
+       store i32 0, i32* %X
+       ret void
+}
+
+define i32 @test(i32* %X) {
+entry:
+       %S = alloca %struct.ss          ; <%struct.ss*> [#uses=4]
+       %tmp1 = getelementptr %struct.ss* %S, i32 0, i32 0              ; <i32*> [#uses=1]
+       store i32 1, i32* %tmp1, align 8
+       %tmp4 = getelementptr %struct.ss* %S, i32 0, i32 1              ; <i64*> [#uses=1]
+       store i64 2, i64* %tmp4, align 4
+       call void @f( %struct.ss* byval %S, i32* byval %X) 
+       ret i32 0
+}