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1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 32; Test the three-operand form of 32-bit subtraction.3;4; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s5 6declare i32 @foo(i32, i32, i32)7 8; Check SLRK.9define i32 @f1(i32 %dummy, i32 %a, i32 %b, ptr %flag) {10; CHECK-LABEL: f1:11; CHECK: # %bb.0:12; CHECK-NEXT: slrk %r2, %r3, %r413; CHECK-NEXT: ipm %r014; CHECK-NEXT: afi %r0, -53687091215; CHECK-NEXT: srl %r0, 3116; CHECK-NEXT: st %r0, 0(%r5)17; CHECK-NEXT: br %r1418 %t = call {i32, i1} @llvm.usub.with.overflow.i32(i32 %a, i32 %b)19 %val = extractvalue {i32, i1} %t, 020 %obit = extractvalue {i32, i1} %t, 121 %ext = zext i1 %obit to i3222 store i32 %ext, ptr %flag23 ret i32 %val24}25 26; Check using the overflow result for a branch.27define i32 @f2(i32 %dummy, i32 %a, i32 %b) {28; CHECK-LABEL: f2:29; CHECK: # %bb.0:30; CHECK-NEXT: slrk %r2, %r3, %r431; CHECK-NEXT: bnler %r1432; CHECK-NEXT: .LBB1_1: # %call33; CHECK-NEXT: lhi %r2, 034; CHECK-NEXT: jg foo@PLT35 %t = call {i32, i1} @llvm.usub.with.overflow.i32(i32 %a, i32 %b)36 %val = extractvalue {i32, i1} %t, 037 %obit = extractvalue {i32, i1} %t, 138 br i1 %obit, label %call, label %exit39 40call:41 %res = tail call i32 @foo(i32 0, i32 %a, i32 %b)42 ret i32 %res43 44exit:45 ret i32 %val46}47 48; ... and the same with the inverted direction.49define i32 @f3(i32 %dummy, i32 %a, i32 %b) {50; CHECK-LABEL: f3:51; CHECK: # %bb.0:52; CHECK-NEXT: slrk %r2, %r3, %r453; CHECK-NEXT: bler %r1454; CHECK-NEXT: .LBB2_1: # %call55; CHECK-NEXT: lhi %r2, 056; CHECK-NEXT: jg foo@PLT57 %t = call {i32, i1} @llvm.usub.with.overflow.i32(i32 %a, i32 %b)58 %val = extractvalue {i32, i1} %t, 059 %obit = extractvalue {i32, i1} %t, 160 br i1 %obit, label %exit, label %call61 62call:63 %res = tail call i32 @foo(i32 0, i32 %a, i32 %b)64 ret i32 %res65 66exit:67 ret i32 %val68}69 70; Check that we can still use SLR in obvious cases.71define i32 @f4(i32 %a, i32 %b, ptr %flag) {72; CHECK-LABEL: f4:73; CHECK: # %bb.0:74; CHECK-NEXT: slr %r2, %r375; CHECK-NEXT: ipm %r076; CHECK-NEXT: afi %r0, -53687091277; CHECK-NEXT: srl %r0, 3178; CHECK-NEXT: st %r0, 0(%r4)79; CHECK-NEXT: br %r1480 %t = call {i32, i1} @llvm.usub.with.overflow.i32(i32 %a, i32 %b)81 %val = extractvalue {i32, i1} %t, 082 %obit = extractvalue {i32, i1} %t, 183 %ext = zext i1 %obit to i3284 store i32 %ext, ptr %flag85 ret i32 %val86}87 88declare {i32, i1} @llvm.usub.with.overflow.i32(i32, i32) nounwind readnone89 90