Imported Upstream version 5.18.0.205

Former-commit-id: 7f59f7e792705db773f1caecdaa823092f4e2927

external/llvm/test/CodeGen/SystemZ/int-add-06.ll

@@ -0,0 +1,93 @@
+; Test 32-bit addition in which the second operand is constant.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+; Check additions of 1.
+define i32 @f1(i32 %a) {
+; CHECK-LABEL: f1:
+; CHECK: ahi %r2, 1
+; CHECK: br %r14
+  %add = add i32 %a, 1
+  ret i32 %add
+}
+
+; Check the high end of the AHI range.
+define i32 @f2(i32 %a) {
+; CHECK-LABEL: f2:
+; CHECK: ahi %r2, 32767
+; CHECK: br %r14
+  %add = add i32 %a, 32767
+  ret i32 %add
+}
+
+; Check the next value up, which must use AFI instead.
+define i32 @f3(i32 %a) {
+; CHECK-LABEL: f3:
+; CHECK: afi %r2, 32768
+; CHECK: br %r14
+  %add = add i32 %a, 32768
+  ret i32 %add
+}
+
+; Check the high end of the signed 32-bit range.
+define i32 @f4(i32 %a) {
+; CHECK-LABEL: f4:
+; CHECK: afi %r2, 2147483647
+; CHECK: br %r14
+  %add = add i32 %a, 2147483647
+  ret i32 %add
+}
+
+; Check the next value up, which is treated as a negative value.
+define i32 @f5(i32 %a) {
+; CHECK-LABEL: f5:
+; CHECK: afi %r2, -2147483648
+; CHECK: br %r14
+  %add = add i32 %a, 2147483648
+  ret i32 %add
+}
+
+; Check the high end of the negative AHI range.
+define i32 @f6(i32 %a) {
+; CHECK-LABEL: f6:
+; CHECK: ahi %r2, -1
+; CHECK: br %r14
+  %add = add i32 %a, -1
+  ret i32 %add
+}
+
+; Check the low end of the AHI range.
+define i32 @f7(i32 %a) {
+; CHECK-LABEL: f7:
+; CHECK: ahi %r2, -32768
+; CHECK: br %r14
+  %add = add i32 %a, -32768
+  ret i32 %add
+}
+
+; Check the next value down, which must use AFI instead.
+define i32 @f8(i32 %a) {
+; CHECK-LABEL: f8:
+; CHECK: afi %r2, -32769
+; CHECK: br %r14
+  %add = add i32 %a, -32769
+  ret i32 %add
+}
+
+; Check the low end of the signed 32-bit range.
+define i32 @f9(i32 %a) {
+; CHECK-LABEL: f9:
+; CHECK: afi %r2, -2147483648
+; CHECK: br %r14
+  %add = add i32 %a, -2147483648
+  ret i32 %add
+}
+
+; Check the next value down, which is treated as a positive value.
+define i32 @f10(i32 %a) {
+; CHECK-LABEL: f10:
+; CHECK: afi %r2, 2147483647
+; CHECK: br %r14
+  %add = add i32 %a, -2147483649
+  ret i32 %add
+}