1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --include-generated-funcs 2; RUN: opt -S -passes=verify,iroutliner -ir-outlining-no-cost < %s | FileCheck %s 3 4; Show that we do not extract similar regions that would involve the splitting 5; of phi nodes on exit. 6 7define void @function1(ptr %a, ptr %b) { 8entry: 9 %0 = alloca i32, align 4 10 %c = load i32, ptr %0, align 4 11 br label %test1 12test1: 13 %e = load i32, ptr %0, align 4 14 br i1 true, label %first, label %next 15test: 16 %d = load i32, ptr %0, align 4 17 br i1 true, label %first, label %next 18first: 19 %1 = phi i32 [ %c, %test ], [ %e, %test1 ] 20 ret void 21next: 22 ret void 23} 24 25define void @function2(ptr %a, ptr %b) { 26entry: 27 %0 = alloca i32, align 4 28 %c = load i32, ptr %0, align 4 29 br label %test1 30test1: 31 %e = load i32, ptr %0, align 4 32 br i1 true, label %first, label %next 33test: 34 %d = load i32, ptr %0, align 4 35 br i1 true, label %first, label %next 36first: 37 ret void 38next: 39 %1 = phi i32 [ %c, %test ], [ %e, %test1 ] 40 ret void 41} 42; CHECK-LABEL: @function1( 43; CHECK-NEXT: entry: 44; CHECK-NEXT: [[DOTCE_LOC:%.*]] = alloca i32, align 4 45; CHECK-NEXT: [[TMP0:%.*]] = alloca i32, align 4 46; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 -1, ptr [[DOTCE_LOC]]) 47; CHECK-NEXT: [[TMP1:%.*]] = call i1 @outlined_ir_func_0(ptr [[TMP0]], ptr [[DOTCE_LOC]], i32 0) 48; CHECK-NEXT: [[DOTCE_RELOAD:%.*]] = load i32, ptr [[DOTCE_LOC]], align 4 49; CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 -1, ptr [[DOTCE_LOC]]) 50; CHECK-NEXT: br i1 [[TMP1]], label [[FIRST:%.*]], label [[NEXT:%.*]] 51; CHECK: first: 52; CHECK-NEXT: [[TMP2:%.*]] = phi i32 [ [[DOTCE_RELOAD]], [[ENTRY:%.*]] ] 53; CHECK-NEXT: ret void 54; CHECK: next: 55; CHECK-NEXT: ret void 56; 57; 58; CHECK-LABEL: @function2( 59; CHECK-NEXT: entry: 60; CHECK-NEXT: [[DOTCE_LOC:%.*]] = alloca i32, align 4 61; CHECK-NEXT: [[TMP0:%.*]] = alloca i32, align 4 62; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 -1, ptr [[DOTCE_LOC]]) 63; CHECK-NEXT: [[TMP1:%.*]] = call i1 @outlined_ir_func_0(ptr [[TMP0]], ptr [[DOTCE_LOC]], i32 1) 64; CHECK-NEXT: [[DOTCE_RELOAD:%.*]] = load i32, ptr [[DOTCE_LOC]], align 4 65; CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 -1, ptr [[DOTCE_LOC]]) 66; CHECK-NEXT: br i1 [[TMP1]], label [[FIRST:%.*]], label [[NEXT:%.*]] 67; CHECK: first: 68; CHECK-NEXT: ret void 69; CHECK: next: 70; CHECK-NEXT: [[TMP2:%.*]] = phi i32 [ [[DOTCE_RELOAD]], [[ENTRY:%.*]] ] 71; CHECK-NEXT: ret void 72; 73; 74; CHECK-LABEL: define internal i1 @outlined_ir_func_0( 75; CHECK-NEXT: newFuncRoot: 76; CHECK-NEXT: br label [[ENTRY_TO_OUTLINE:%.*]] 77; CHECK: entry_to_outline: 78; CHECK-NEXT: [[C:%.*]] = load i32, ptr [[TMP0:%.*]], align 4 79; CHECK-NEXT: br label [[TEST1:%.*]] 80; CHECK: test1: 81; CHECK-NEXT: [[E:%.*]] = load i32, ptr [[TMP0]], align 4 82; CHECK-NEXT: br i1 true, label [[FIRST_SPLIT:%.*]], label [[PHI_BLOCK:%.*]] 83; CHECK: test: 84; CHECK-NEXT: [[D:%.*]] = load i32, ptr [[TMP0]], align 4 85; CHECK-NEXT: br i1 true, label [[FIRST_SPLIT]], label [[PHI_BLOCK]] 86; CHECK: first.split: 87; CHECK-NEXT: [[DOTCE:%.*]] = phi i32 [ [[C]], [[TEST:%.*]] ], [ [[E]], [[TEST1]] ] 88; CHECK-NEXT: br label [[FIRST_EXITSTUB:%.*]] 89; CHECK: first.exitStub: 90; CHECK-NEXT: switch i32 [[TMP2:%.*]], label [[FINAL_BLOCK_1:%.*]] [ 91; CHECK-NEXT: i32 0, label [[OUTPUT_BLOCK_0_1:%.*]] 92; CHECK-NEXT: ] 93; CHECK: next.exitStub: 94; CHECK-NEXT: switch i32 [[TMP2]], label [[FINAL_BLOCK_0:%.*]] [ 95; CHECK-NEXT: i32 0, label [[OUTPUT_BLOCK_1_0:%.*]] 96; CHECK-NEXT: ] 97; CHECK: output_block_0_1: 98; CHECK-NEXT: store i32 [[DOTCE]], ptr [[TMP1:%.*]], align 4 99; CHECK-NEXT: br label [[FINAL_BLOCK_1]] 100; CHECK: output_block_1_0: 101; CHECK-NEXT: store i32 [[TMP3:%.*]], ptr [[TMP1]], align 4 102; CHECK-NEXT: br label [[FINAL_BLOCK_0]] 103; CHECK: phi_block: 104; CHECK-NEXT: [[TMP3]] = phi i32 [ [[C]], [[TEST]] ], [ [[E]], [[TEST1]] ] 105; CHECK-NEXT: br label [[NEXT_EXITSTUB:%.*]] 106; CHECK: final_block_0: 107; CHECK-NEXT: ret i1 false 108; CHECK: final_block_1: 109; CHECK-NEXT: ret i1 true 110; 111