1; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z14 -O3 | FileCheck %s 2; 3; Check that CodeGenPrepare transforms these functions to use 4; uadd.with.overflow / usub.with.overflow intrinsics so that the compare 5; instruction is eliminated. 6 7define i32 @uaddo_32(i32 %arg) { 8; CHECK-LABEL: uaddo_32: 9; CHECK: alhsik %r0, %r2, -1 10; CHECK: locrnle %r2, %r0 11; CHECK: br %r14 12 13bb: 14 %tmp10 = icmp ne i32 %arg, 0 15 %tmp11 = add nsw i32 %arg, -1 16 %tmp12 = select i1 %tmp10, i32 %tmp11, i32 %arg 17 ret i32 %tmp12 18} 19 20define i64 @uaddo_64(i64 %arg) { 21; CHECK-LABEL: uaddo_64: 22; CHECK: alghsik %r0, %r2, -1 23; CHECK: locgrnle %r2, %r0 24; CHECK: br %r14 25bb: 26 %tmp10 = icmp ne i64 %arg, 0 27 %tmp11 = add nsw i64 %arg, -1 28 %tmp12 = select i1 %tmp10, i64 %tmp11, i64 %arg 29 ret i64 %tmp12 30} 31 32define i32 @usubo_32(i32 %arg) { 33; CHECK-LABEL: usubo_32: 34; CHECK: alhsik %r0, %r2, -1 35; CHECK: locrle %r2, %r0 36; CHECK: br %r14 37bb: 38 %tmp10 = icmp eq i32 %arg, 0 39 %tmp11 = sub nsw i32 %arg, 1 40 %tmp12 = select i1 %tmp10, i32 %tmp11, i32 %arg 41 ret i32 %tmp12 42} 43 44define i64 @usubo_64(i64 %arg) { 45; CHECK-LABEL: usubo_64: 46; CHECK: alghsik %r0, %r2, -1 47; CHECK: locgrle %r2, %r0 48; CHECK: br %r14 49bb: 50 %tmp10 = icmp eq i64 %arg, 0 51 %tmp11 = sub nsw i64 %arg, 1 52 %tmp12 = select i1 %tmp10, i64 %tmp11, i64 %arg 53 ret i64 %tmp12 54} 55 56define i32 @optbranch_32(i32 %Arg) { 57; CHECK-LABEL: optbranch_32: 58; CHECK: alhsik %r2, %r2, 1 59; CHECK-NEXT: bler %r14 60; CHECK-NEXT: .LBB4_1: 61; CHECK-NEXT: lhi %r2, -1 62; CHECK-NEXT: br %r14 63bb: 64 %i1 = icmp eq i32 %Arg, -1 65 br i1 %i1, label %bb2, label %bb3 66 67bb2: 68 ret i32 -1 69 70bb3: 71 %i4 = add nuw i32 %Arg, 1 72 ret i32 %i4 73} 74 75define i64 @optbranch_64(i64 %Arg) { 76; CHECK-LABEL: optbranch_64: 77; CHECK: alghsik %r2, %r2, 1 78; CHECK-NEXT: bler %r14 79; CHECK-NEXT: .LBB5_1: 80; CHECK-NEXT: lghi %r2, -1 81; CHECK-NEXT: br %r14 82bb: 83 %i1 = icmp eq i64 %Arg, -1 84 br i1 %i1, label %bb2, label %bb3 85 86bb2: 87 ret i64 -1 88 89bb3: 90 %i4 = add nuw i64 %Arg, 1 91 ret i64 %i4 92} 93