;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+declare i64 @foo()
+
; Check SGR.
define i64 @f1(i64 %a, i64 %b) {
; CHECK: f1:
%sub = sub i64 %a, %b
ret i64 %sub
}
+
+; Check that subtractions of spilled values can use SG rather than SGR.
+define i64 @f9(i64 *%ptr0) {
+; CHECK: f9:
+; CHECK: brasl %r14, foo@PLT
+; CHECK: sg %r2, 160(%r15)
+; CHECK: br %r14
+ %ptr1 = getelementptr i64 *%ptr0, i64 2
+ %ptr2 = getelementptr i64 *%ptr0, i64 4
+ %ptr3 = getelementptr i64 *%ptr0, i64 6
+ %ptr4 = getelementptr i64 *%ptr0, i64 8
+ %ptr5 = getelementptr i64 *%ptr0, i64 10
+ %ptr6 = getelementptr i64 *%ptr0, i64 12
+ %ptr7 = getelementptr i64 *%ptr0, i64 14
+ %ptr8 = getelementptr i64 *%ptr0, i64 16
+ %ptr9 = getelementptr i64 *%ptr0, i64 18
+
+ %val0 = load i64 *%ptr0
+ %val1 = load i64 *%ptr1
+ %val2 = load i64 *%ptr2
+ %val3 = load i64 *%ptr3
+ %val4 = load i64 *%ptr4
+ %val5 = load i64 *%ptr5
+ %val6 = load i64 *%ptr6
+ %val7 = load i64 *%ptr7
+ %val8 = load i64 *%ptr8
+ %val9 = load i64 *%ptr9
+
+ %ret = call i64 @foo()
+
+ %sub0 = sub i64 %ret, %val0
+ %sub1 = sub i64 %sub0, %val1
+ %sub2 = sub i64 %sub1, %val2
+ %sub3 = sub i64 %sub2, %val3
+ %sub4 = sub i64 %sub3, %val4
+ %sub5 = sub i64 %sub4, %val5
+ %sub6 = sub i64 %sub5, %val6
+ %sub7 = sub i64 %sub6, %val7
+ %sub8 = sub i64 %sub7, %val8
+ %sub9 = sub i64 %sub8, %val9
+
+ ret i64 %sub9
+}