1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt -mtriple=x86_64-linux -codegenprepare -S < %s | FileCheck %s 3 4declare { i64, i1 } @llvm.uadd.with.overflow.i64(i64, i64) 5 6define i32 @test_01(i32* %p, i64 %len, i32 %x) { 7; CHECK-LABEL: @test_01( 8; CHECK-NEXT: entry: 9; CHECK-NEXT: br label [[LOOP:%.*]] 10; CHECK: loop: 11; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[MATH:%.*]], [[BACKEDGE:%.*]] ], [ [[LEN:%.*]], [[ENTRY:%.*]] ] 12; CHECK-NEXT: [[TMP0:%.*]] = call { i64, i1 } @llvm.uadd.with.overflow.i64(i64 [[IV]], i64 1) 13; CHECK-NEXT: [[MATH]] = extractvalue { i64, i1 } [[TMP0]], 0 14; CHECK-NEXT: [[OV:%.*]] = extractvalue { i64, i1 } [[TMP0]], 1 15; CHECK-NEXT: br i1 [[OV]], label [[EXIT:%.*]], label [[BACKEDGE]] 16; CHECK: backedge: 17; CHECK-NEXT: [[SUNKADDR3:%.*]] = mul i64 [[MATH]], 4 18; CHECK-NEXT: [[TMP1:%.*]] = bitcast i32* [[P:%.*]] to i8* 19; CHECK-NEXT: [[SUNKADDR4:%.*]] = getelementptr i8, i8* [[TMP1]], i64 [[SUNKADDR3]] 20; CHECK-NEXT: [[TMP2:%.*]] = bitcast i8* [[SUNKADDR4]] to i32* 21; CHECK-NEXT: [[LOADED:%.*]] = load atomic i32, i32* [[TMP2]] unordered, align 4 22; CHECK-NEXT: [[COND_2:%.*]] = icmp eq i32 [[LOADED]], [[X:%.*]] 23; CHECK-NEXT: br i1 [[COND_2]], label [[FAILURE:%.*]], label [[LOOP]] 24; CHECK: exit: 25; CHECK-NEXT: ret i32 -1 26; CHECK: failure: 27; CHECK-NEXT: unreachable 28; 29entry: 30 br label %loop 31 32loop: ; preds = %backedge, %entry 33 %iv = phi i64 [ %math, %backedge ], [ %len, %entry ] 34 %0 = call { i64, i1 } @llvm.uadd.with.overflow.i64(i64 %iv, i64 1) 35 %math = extractvalue { i64, i1 } %0, 0 36 %ov = extractvalue { i64, i1 } %0, 1 37 br i1 %ov, label %exit, label %backedge 38 39backedge: ; preds = %loop 40 %sunkaddr = mul i64 %iv, 4 41 %1 = bitcast i32* %p to i8* 42 %sunkaddr1 = getelementptr i8, i8* %1, i64 %sunkaddr 43 %sunkaddr2 = getelementptr i8, i8* %sunkaddr1, i64 4 44 %2 = bitcast i8* %sunkaddr2 to i32* 45 %loaded = load atomic i32, i32* %2 unordered, align 4 46 %cond_2 = icmp eq i32 %loaded, %x 47 br i1 %cond_2, label %failure, label %loop 48 49exit: ; preds = %loop 50 ret i32 -1 51 52failure: ; preds = %backedge 53 unreachable 54} 55