[PowerPC][NFC] Pre-commit test case to prepare for patch to custom lower ssubo

Author: maryammo

llvm/test/CodeGen/PowerPC/ssubo-32.ll

@@ -0,0 +1,26 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc64le-unknown-linux-gnu | FileCheck %s
+; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc64-unknown-aix | FileCheck %s
+; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc-unknown-aix | FileCheck %s
+
+define i1 @subovfi_i32(i32 noundef %a, i32 noundef %b, ptr %c)  {
+; CHECK-LABEL: subovfi_i32:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    sub 6, 3, 4
+; CHECK-NEXT:    cmpwi 1, 4, 0
+; CHECK-NEXT:    cmpw 6, 3
+; CHECK-NEXT:    li 3, 1
+; CHECK-NEXT:    stw 6, 0(5)
+; CHECK-NEXT:    creqv 20, 5, 0
+; CHECK-NEXT:    isel 3, 0, 3, 20
+; CHECK-NEXT:    blr
+entry:
+  %0 = call { i32, i1 } @llvm.ssub.with.overflow.i32(i32 %a, i32 %b)
+  %1 = extractvalue { i32, i1 } %0, 1
+  %2 = extractvalue { i32, i1 } %0, 0
+  store i32 %2, ptr %c, align 4
+  ret i1 %1
+}
+
+declare { i32, i1 } @llvm.ssub.with.overflow.i32(i32, i32)
+