1 files changed, 48 insertions, 0 deletions
diff --git a/test/CodeGen/X86/regparm.ll b/test/CodeGen/X86/regparm.ll
new file mode 100644
index 0000000000000..9484e5a9490bd
--- /dev/null
+++ b/test/CodeGen/X86/regparm.ll
@@ -0,0 +1,48 @@
+; RUN: llc %s -mtriple=i386-pc-linux -o - | FileCheck -check-prefix=CHECK %s 
+; RUN: llc %s -mtriple=i386-pc-win32 -o - | FileCheck -check-prefix=WIN %s
+; RUN: llc %s -mtriple=i386-pc-linux -fast-isel -o - | FileCheck -check-prefix=FAST %s 
+; RUN: llc %s -mtriple=i386-pc-win32 -fast-isel -o - | FileCheck -check-prefix=FASTWIN %s
+
+
+
+target datalayout = "e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128"
+target triple = "i386-unknown-linux-gnu"
+
+; Function Attrs: argmemonly nounwind
+declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture writeonly, i8* nocapture readonly, i32, i32, i1) #1
+
+define void @use_memset(i8* inreg nocapture %dest, i8 inreg %c, i32 inreg %n) local_unnamed_addr #0 {
+entry:
+;CHECK-LABEL: @use_memset
+;CHECK-NOT: push
+;CHECK: jmp	memset
+;CHECK-NOT: retl
+;WIN-LABEL: @use_memset
+;WIN-NOT: push
+;WIN: jmp	_memset
+;WIN-NOT: retl
+;FAST-LABEL: @use_memset
+;FAST:	subl	$12, %esp
+;FAST-NEXT: 	movzbl	%dl, %edx
+;FAST-NEXT:     calll	memset
+;FAST-NEXT:	addl	$12, %esp
+;FASTWIN-LABEL: @use_memset
+;FASTWIN: 	movzbl	%dl, %edx
+;FASTWIN-NEXT:     calll	_memset
+;FASTWIN-NEXT:     retl
+  tail call void @llvm.memset.p0i8.i32(i8* %dest, i8 %c, i32 %n, i32 1, i1 false)
+  ret void
+}
+
+; Function Attrs: argmemonly nounwind
+declare void @llvm.memset.p0i8.i32(i8* nocapture writeonly, i8, i32, i32, i1) #1
+
+
+attributes #0 = { nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="pentium4" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #1 = { argmemonly nounwind }
+
+!llvm.module.flags = !{!0}
+!llvm.ident = !{!1}
+
+!0 = !{i32 1, !"NumRegisterParameters", i32 3}
+!1 = !{!"clang version 4.0.0 (trunk 288025) (llvm/trunk 288033)"}