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-rw-r--r--test/CodeGen/X86/inalloca-regparm.ll15
1 files changed, 15 insertions, 0 deletions
diff --git a/test/CodeGen/X86/inalloca-regparm.ll b/test/CodeGen/X86/inalloca-regparm.ll
new file mode 100644
index 0000000..9dd916b
--- /dev/null
+++ b/test/CodeGen/X86/inalloca-regparm.ll
@@ -0,0 +1,15 @@
+; RUN: llc -mtriple=i686-windows-msvc < %s -o /dev/null
+; RUN: not llc -mtriple=x86_64-windows-msvc %s -o /dev/null 2>&1 | FileCheck %s
+
+; This will compile successfully on x86 but not x86_64, because %b will become a
+; register parameter.
+
+declare x86_thiscallcc i32 @f(i32 %a, i32* inalloca %b)
+define void @g() {
+ %b = alloca inalloca i32
+ store i32 2, i32* %b
+ call x86_thiscallcc i32 @f(i32 0, i32* inalloca %b)
+ ret void
+}
+
+; CHECK: cannot use inalloca attribute on a register parameter