| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -mtriple=x86_64-linux -codegenprepare -S < %s | FileCheck %s |
| |
| declare { i64, i1 } @llvm.uadd.with.overflow.i64(i64, i64) |
| |
| define i32 @test_01(i32* %p, i64 %len, i32 %x) { |
| ; CHECK-LABEL: @test_01( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br label [[LOOP:%.*]] |
| ; CHECK: loop: |
| ; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[MATH:%.*]], [[BACKEDGE:%.*]] ], [ [[LEN:%.*]], [[ENTRY:%.*]] ] |
| ; CHECK-NEXT: [[TMP0:%.*]] = call { i64, i1 } @llvm.uadd.with.overflow.i64(i64 [[IV]], i64 1) |
| ; CHECK-NEXT: [[MATH]] = extractvalue { i64, i1 } [[TMP0]], 0 |
| ; CHECK-NEXT: [[OV:%.*]] = extractvalue { i64, i1 } [[TMP0]], 1 |
| ; CHECK-NEXT: br i1 [[OV]], label [[EXIT:%.*]], label [[BACKEDGE]] |
| ; CHECK: backedge: |
| ; CHECK-NEXT: [[SUNKADDR3:%.*]] = mul i64 [[MATH]], 4 |
| ; CHECK-NEXT: [[TMP1:%.*]] = bitcast i32* [[P:%.*]] to i8* |
| ; CHECK-NEXT: [[SUNKADDR4:%.*]] = getelementptr i8, i8* [[TMP1]], i64 [[SUNKADDR3]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = bitcast i8* [[SUNKADDR4]] to i32* |
| ; CHECK-NEXT: [[LOADED:%.*]] = load atomic i32, i32* [[TMP2]] unordered, align 4 |
| ; CHECK-NEXT: [[COND_2:%.*]] = icmp eq i32 [[LOADED]], [[X:%.*]] |
| ; CHECK-NEXT: br i1 [[COND_2]], label [[FAILURE:%.*]], label [[LOOP]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret i32 -1 |
| ; CHECK: failure: |
| ; CHECK-NEXT: unreachable |
| ; |
| entry: |
| br label %loop |
| |
| loop: ; preds = %backedge, %entry |
| %iv = phi i64 [ %math, %backedge ], [ %len, %entry ] |
| %0 = call { i64, i1 } @llvm.uadd.with.overflow.i64(i64 %iv, i64 1) |
| %math = extractvalue { i64, i1 } %0, 0 |
| %ov = extractvalue { i64, i1 } %0, 1 |
| br i1 %ov, label %exit, label %backedge |
| |
| backedge: ; preds = %loop |
| %sunkaddr = mul i64 %iv, 4 |
| %1 = bitcast i32* %p to i8* |
| %sunkaddr1 = getelementptr i8, i8* %1, i64 %sunkaddr |
| %sunkaddr2 = getelementptr i8, i8* %sunkaddr1, i64 4 |
| %2 = bitcast i8* %sunkaddr2 to i32* |
| %loaded = load atomic i32, i32* %2 unordered, align 4 |
| %cond_2 = icmp eq i32 %loaded, %x |
| br i1 %cond_2, label %failure, label %loop |
| |
| exit: ; preds = %loop |
| ret i32 -1 |
| |
| failure: ; preds = %backedge |
| unreachable |
| } |