1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt -passes='loop(indvars,loop-deletion,loop-unroll-full),verify<scalar-evolution>' -S %s | FileCheck %s 3 4define void @test(i1 %c.0, ptr %A) { 5; CHECK-LABEL: @test( 6; CHECK-NEXT: entry: 7; CHECK-NEXT: br i1 [[C_0:%.*]], label [[LOOP_1_HEADER_PREHEADER:%.*]], label [[OUTER_HEADER_PREHEADER:%.*]] 8; CHECK: outer.header.preheader: 9; CHECK-NEXT: br label [[OUTER_HEADER:%.*]] 10; CHECK: loop.1.header.preheader: 11; CHECK-NEXT: br label [[LOOP_1_HEADER:%.*]] 12; CHECK: loop.1.header: 13; CHECK-NEXT: store i32 0, ptr [[A:%.*]], align 4 14; CHECK-NEXT: br label [[LOOP_1_LATCH:%.*]] 15; CHECK: loop.1.latch: 16; CHECK-NEXT: store i32 0, ptr [[A]], align 4 17; CHECK-NEXT: br label [[LOOP_1_LATCH_1:%.*]] 18; CHECK: loop.1.latch.1: 19; CHECK-NEXT: ret void 20; CHECK: outer.header.loopexit: 21; CHECK-NEXT: br label [[OUTER_HEADER]] 22; CHECK: outer.header: 23; CHECK-NEXT: [[L:%.*]] = load i32, ptr [[A]], align 4 24; CHECK-NEXT: br label [[OUTER_HEADER_LOOPEXIT:%.*]] 25; 26entry: 27 br i1 %c.0, label %loop.1.header, label %outer.header 28 29loop.1.header: 30 %iv.1 = phi i32 [ 0, %entry ], [ 1, %loop.1.latch ] 31 store i32 0, ptr %A, align 4 32 br label %loop.1.latch 33 34loop.1.latch: 35 %cmp.1 = icmp eq i32 %iv.1, 0 36 br i1 %cmp.1, label %loop.1.header, label %exit 37 38outer.header: 39 %l = load i32, ptr %A, align 4 40 br label %inner.header 41 42inner.header: 43 %iv.2 = phi i32 [ 0, %outer.header ], [ %iv.2.next, %inner.outer.latch ] 44 %cmp.2 = icmp eq i32 %iv.2, %l 45 br i1 %cmp.2, label %inner.outer.latch, label %inner.outer.latch 46 47inner.outer.latch: 48 %iv.2.next = add nuw nsw i32 %iv.2, 1 49 br i1 false, label %inner.header, label %outer.header 50 51exit: 52 ret void 53} 54