1 files changed, 59 insertions, 0 deletions
diff --git a/test/CodeGen/AVR/varargs.ll b/test/CodeGen/AVR/varargs.ll
new file mode 100644
index 0000000000000..b35ce4c0f7aef
--- /dev/null
+++ b/test/CodeGen/AVR/varargs.ll
@@ -0,0 +1,59 @@
+; RUN: llc -mattr=sram,movw,addsubiw < %s -march=avr | FileCheck %s
+
+declare void @llvm.va_start(i8*)
+declare i16 @vsprintf(i8* nocapture, i8* nocapture, i8*)
+declare void @llvm.va_end(i8*)
+
+define i16 @varargs1(i8* nocapture %x, ...) {
+; CHECK-LABEL: varargs1:
+; CHECK: movw r20, r28
+; CHECK: subi r20, 215
+; CHECK: sbci r21, 255
+; CHECK: movw r24, r28
+; CHECK: adiw r24, 3
+; CHECK: ldd r22, Y+39
+; CHECK: ldd r23, Y+40
+; CHECK: call
+  %buffer = alloca [32 x i8]
+  %ap = alloca i8*
+  %ap1 = bitcast i8** %ap to i8*
+  call void @llvm.va_start(i8* %ap1)
+  %arraydecay = getelementptr inbounds [32 x i8], [32 x i8]* %buffer, i16 0, i16 0
+  %1 = load i8*, i8** %ap
+  %call = call i16 @vsprintf(i8* %arraydecay, i8* %x, i8* %1)
+  call void @llvm.va_end(i8* %ap1)
+  ret i16 0
+}
+
+define i16 @varargs2(i8* nocapture %x, ...) {
+; CHECK-LABEL: varargs2:
+; CHECK: ld r24, Z
+; CHECK: ldd r25, Z+1
+  %ap = alloca i8*
+  %ap1 = bitcast i8** %ap to i8*
+  call void @llvm.va_start(i8* %ap1)
+  %1 = va_arg i8** %ap, i16
+  call void @llvm.va_end(i8* %ap1)
+  ret i16 %1
+}
+
+declare void @var1223(i16, ...)
+define void @varargcall() {
+; CHECK-LABEL: varargcall:
+; CHECK: ldi [[REG1:r[0-9]+]], 191
+; CHECK: ldi [[REG2:r[0-9]+]], 223
+; CHECK: push [[REG2]]
+; CHECK: push [[REG1]]
+; CHECK: ldi [[REG1:r[0-9]+]], 189
+; CHECK: ldi [[REG2:r[0-9]+]], 205
+; CHECK: push [[REG2]]
+; CHECK: push [[REG1]]
+; CHECK: ldi [[REG1:r[0-9]+]], 205
+; CHECK: ldi [[REG2:r[0-9]+]], 171
+; CHECK: push [[REG2]]
+; CHECK: push [[REG1]]
+; CHECK: call
+; CHECK: adiw r30, 6
+  tail call void (i16, ...) @var1223(i16 -21555, i16 -12867, i16 -8257)
+  ret void
+}