[arm-fast-isel] Add support for vararg function calls.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159804 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/ARM/fast-isel-call.ll b/test/CodeGen/ARM/fast-isel-call.ll
index 0f24756..edc805a 100644
--- a/test/CodeGen/ARM/fast-isel-call.ll
+++ b/test/CodeGen/ARM/fast-isel-call.ll
@@ -178,3 +178,46 @@
%tmp1 = udiv i32 %a, %b ; <i32> [#uses=1]
ret i32 %tmp1
}
+
+define i32 @VarArg() nounwind {
+entry:
+ %i = alloca i32, align 4
+ %j = alloca i32, align 4
+ %k = alloca i32, align 4
+ %m = alloca i32, align 4
+ %n = alloca i32, align 4
+ %tmp = alloca i32, align 4
+ %0 = load i32* %i, align 4
+ %1 = load i32* %j, align 4
+ %2 = load i32* %k, align 4
+ %3 = load i32* %m, align 4
+ %4 = load i32* %n, align 4
+; ARM: VarArg
+; ARM: mov r7, sp
+; ARM: movw r0, #5
+; ARM: ldr r1, [r7, #-4]
+; ARM: ldr r2, [r7, #-8]
+; ARM: ldr r3, [r7, #-12]
+; ARM: ldr r9, [sp, #16]
+; ARM: ldr r12, [sp, #12]
+; ARM: str r9, [sp]
+; ARM: str r12, [sp, #4]
+; ARM: bl _CallVariadic
+; THUMB: mov r7, sp
+; THUMB: movs r0, #5
+; THUMB: movt r0, #0
+; THUMB: ldr r1, [sp, #28]
+; THUMB: ldr r2, [sp, #24]
+; THUMB: ldr r3, [sp, #20]
+; THUMB: ldr.w r9, [sp, #16]
+; THUMB: ldr.w r12, [sp, #12]
+; THUMB: str.w r9, [sp]
+; THUMB: str.w r12, [sp, #4]
+; THUMB: bl _CallVariadic
+ %call = call i32 (i32, ...)* @CallVariadic(i32 5, i32 %0, i32 %1, i32 %2, i32 %3, i32 %4)
+ store i32 %call, i32* %tmp, align 4
+ %5 = load i32* %tmp, align 4
+ ret i32 %5
+}
+
+declare i32 @CallVariadic(i32, ...)