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; This test ensures that an extra output is not added when there is a bitcast 5; that is relocated to outside of the extraction due to a starting lifetime 6; instruction outside of the extracted region. 7 8; Additionally, we check that the newly added bitcast instruction is excluded in 9; further extractions. 10 11declare void @llvm.lifetime.start.p0(i64, ptr nocapture) 12declare void @llvm.lifetime.end.p0(i64, ptr nocapture) 13 14define void @outline_bitcast_base() { 15entry: 16 %a = alloca i32, align 4 17 %b = alloca i32, align 4 18 %c = alloca i32, align 4 19 %d = alloca i32, align 4 20 store i32 2, ptr %a, align 4 21 store i32 3, ptr %b, align 4 22 store i32 4, ptr %c, align 4 23 %al = load i32, ptr %a 24 %bl = load i32, ptr %b 25 %cl = load i32, ptr %c 26 ret void 27} 28 29define void @outline_bitcast_removed() { 30entry: 31 %a = alloca i32, align 4 32 %b = alloca i32, align 4 33 %c = alloca i32, align 4 34 %d = alloca i32, align 4 35 store i32 2, ptr %a, align 4 36 store i32 3, ptr %b, align 4 37 store i32 4, ptr %c, align 4 38 %al = load i32, ptr %a 39 %bl = load i32, ptr %b 40 %cl = load i32, ptr %c 41 call void @llvm.lifetime.start.p0(i64 -1, ptr %d) 42 %am = load i32, ptr %b 43 %bm = load i32, ptr %a 44 %cm = load i32, ptr %c 45 call void @llvm.lifetime.end.p0(i64 -1, ptr %d) 46 ret void 47} 48 49; The first bitcast is moved down to lifetime start, and, since the original 50; endpoint does not match the new endpoint, we cannot extract and outline the 51; second bitcast and set of adds. Outlining only occurs in this case due to 52; the lack of a cost model, as denoted by the debug command line argument. 53 54define void @outline_bitcast_base2(i32 %a, i32 %b, i32 %c) { 55entry: 56 %d = alloca i32, align 4 57 %al = add i32 %a, %b 58 %bl = add i32 %b, %a 59 %cl = add i32 %b, %c 60 %buffer = mul i32 %a, %b 61 %am = add i32 %a, %b 62 %bm = add i32 %b, %a 63 %cm = add i32 %b, %c 64 call void @llvm.lifetime.start.p0(i64 -1, ptr %d) 65 call void @llvm.lifetime.end.p0(i64 -1, ptr %d) 66 ret void 67} 68 69; CHECK-LABEL: @outline_bitcast_base( 70; CHECK-NEXT: entry: 71; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4 72; CHECK-NEXT: [[B:%.*]] = alloca i32, align 4 73; CHECK-NEXT: [[C:%.*]] = alloca i32, align 4 74; CHECK-NEXT: [[D:%.*]] = alloca i32, align 4 75; CHECK-NEXT: call void @outlined_ir_func_0(ptr [[A]], ptr [[B]], ptr [[C]]) 76; CHECK-NEXT: ret void 77; 78; 79; CHECK-LABEL: @outline_bitcast_removed( 80; CHECK-NEXT: entry: 81; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4 82; CHECK-NEXT: [[B:%.*]] = alloca i32, align 4 83; CHECK-NEXT: [[C:%.*]] = alloca i32, align 4 84; CHECK-NEXT: call void @outlined_ir_func_0(ptr [[A]], ptr [[B]], ptr [[C]]) 85; CHECK-NEXT: [[AM:%.*]] = load i32, ptr [[B]], align 4 86; CHECK-NEXT: [[BM:%.*]] = load i32, ptr [[A]], align 4 87; CHECK-NEXT: [[CM:%.*]] = load i32, ptr [[C]], align 4 88; CHECK-NEXT: ret void 89; 90; 91; CHECK-LABEL: @outline_bitcast_base2( 92; CHECK-NEXT: entry: 93; CHECK-NEXT: call void @outlined_ir_func_1(i32 [[A:%.*]], i32 [[B:%.*]], i32 [[C:%.*]]) 94; CHECK-NEXT: [[BUFFER:%.*]] = mul i32 [[A]], [[B]] 95; CHECK-NEXT: call void @outlined_ir_func_1(i32 [[A]], i32 [[B]], i32 [[C]]) 96; CHECK-NEXT: ret void 97; 98; 99; CHECK-LABEL: @outlined_ir_func_0( 100; CHECK-NEXT: newFuncRoot: 101; CHECK-NEXT: br label [[ENTRY_TO_OUTLINE:%.*]] 102; CHECK: entry_to_outline: 103; CHECK-NEXT: store i32 2, ptr [[TMP0:%.*]], align 4 104; CHECK-NEXT: store i32 3, ptr [[TMP1:%.*]], align 4 105; CHECK-NEXT: store i32 4, ptr [[TMP2:%.*]], align 4 106; CHECK-NEXT: [[AL:%.*]] = load i32, ptr [[TMP0]], align 4 107; CHECK-NEXT: [[BL:%.*]] = load i32, ptr [[TMP1]], align 4 108; CHECK-NEXT: [[CL:%.*]] = load i32, ptr [[TMP2]], align 4 109; CHECK-NEXT: br label [[ENTRY_AFTER_OUTLINE_EXITSTUB:%.*]] 110; CHECK: entry_after_outline.exitStub: 111; CHECK-NEXT: ret void 112; 113; 114; CHECK-LABEL: @outlined_ir_func_1( 115; CHECK-NEXT: newFuncRoot: 116; CHECK-NEXT: [[D:%.*]] = alloca i32, align 4 117; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 -1, ptr [[D]]) 118; CHECK-NEXT: br label [[ENTRY_TO_OUTLINE:%.*]] 119; CHECK: entry_to_outline: 120; CHECK-NEXT: [[AL:%.*]] = add i32 [[TMP0:%.*]], [[TMP1:%.*]] 121; CHECK-NEXT: [[BL:%.*]] = add i32 [[TMP1]], [[TMP0]] 122; CHECK-NEXT: [[CL:%.*]] = add i32 [[TMP1]], [[TMP2:%.*]] 123; CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 -1, ptr [[D]]) 124; CHECK-NEXT: br label [[ENTRY_AFTER_OUTLINE_EXITSTUB:%.*]] 125; CHECK: entry_after_outline.exitStub: 126; CHECK-NEXT: ret void 127; 128