forked from OSchip/llvm-project
133 lines
5.0 KiB
LLVM
133 lines
5.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --include-generated-funcs
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; RUN: opt -S -verify -iroutliner -ir-outlining-no-cost < %s | FileCheck %s
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; This test ensures that an extra output is not added when there is a bitcast
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; that is relocated to outside of the extraction due to a starting lifetime
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; instruction outside of the extracted region.
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; Additionally, we check that the newly added bitcast instruction is excluded in
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; further extractions.
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declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture)
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declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture)
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define void @outline_bitcast_base() {
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entry:
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%a = alloca i32, align 4
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%b = alloca i32, align 4
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%c = alloca i32, align 4
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%d = alloca i32, align 4
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store i32 2, i32* %a, align 4
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store i32 3, i32* %b, align 4
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store i32 4, i32* %c, align 4
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%X = bitcast i32* %d to i8*
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%al = load i32, i32* %a
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%bl = load i32, i32* %b
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%cl = load i32, i32* %c
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ret void
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}
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define void @outline_bitcast_removed() {
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entry:
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%a = alloca i32, align 4
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%b = alloca i32, align 4
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%c = alloca i32, align 4
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%d = alloca i32, align 4
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store i32 2, i32* %a, align 4
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store i32 3, i32* %b, align 4
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store i32 4, i32* %c, align 4
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%X = bitcast i32* %d to i8*
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%al = load i32, i32* %a
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%bl = load i32, i32* %b
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%cl = load i32, i32* %c
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call void @llvm.lifetime.start.p0i8(i64 -1, i8* %X)
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%am = load i32, i32* %b
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%bm = load i32, i32* %a
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%cm = load i32, i32* %c
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call void @llvm.lifetime.end.p0i8(i64 -1, i8* %X)
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ret void
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}
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; The first bitcast is moved down to lifetime start, and, since the original
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; endpoint does not match the new endpoint, we cannot extract and outline the
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; second bitcast and set of adds. Outlining only occurs in this case due to
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; the lack of a cost model, as denoted by the debug command line argument.
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define void @outline_bitcast_base2(i32 %a, i32 %b, i32 %c) {
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entry:
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%d = alloca i32, align 4
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%X = bitcast i32* %d to i8*
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%al = add i32 %a, %b
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%bl = add i32 %b, %a
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%cl = add i32 %b, %c
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%buffer = mul i32 %a, %b
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%Y = bitcast i32* %d to i8*
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%am = add i32 %a, %b
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%bm = add i32 %b, %a
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%cm = add i32 %b, %c
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call void @llvm.lifetime.start.p0i8(i64 -1, i8* %X)
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call void @llvm.lifetime.end.p0i8(i64 -1, i8* %X)
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ret void
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}
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; CHECK-LABEL: @outline_bitcast_base(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[B:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[C:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[D:%.*]] = alloca i32, align 4
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; CHECK-NEXT: call void @outlined_ir_func_0(i32* [[A]], i32* [[B]], i32* [[C]], i32* [[D]])
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; CHECK-NEXT: ret void
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;
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;
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; CHECK-LABEL: @outline_bitcast_removed(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[B:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[C:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[D:%.*]] = alloca i32, align 4
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; CHECK-NEXT: call void @outlined_ir_func_0(i32* [[A]], i32* [[B]], i32* [[C]], i32* [[D]])
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; CHECK-NEXT: [[LT_CAST1:%.*]] = bitcast i32* [[D]] to i8*
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; CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 -1, i8* [[LT_CAST1]])
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; CHECK-NEXT: [[AM:%.*]] = load i32, i32* [[B]], align 4
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; CHECK-NEXT: [[BM:%.*]] = load i32, i32* [[A]], align 4
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; CHECK-NEXT: [[CM:%.*]] = load i32, i32* [[C]], align 4
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; CHECK-NEXT: [[LT_CAST:%.*]] = bitcast i32* [[D]] to i8*
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; CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 -1, i8* [[LT_CAST]])
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; CHECK-NEXT: ret void
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;
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;
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; CHECK-LABEL: @outline_bitcast_base2(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[D:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[X:%.*]] = bitcast i32* [[D]] to i8*
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; CHECK-NEXT: [[AL:%.*]] = add i32 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: [[BL:%.*]] = add i32 [[B]], [[A]]
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; CHECK-NEXT: [[CL:%.*]] = add i32 [[B]], [[C:%.*]]
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; CHECK-NEXT: [[BUFFER:%.*]] = mul i32 [[A]], [[B]]
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; CHECK-NEXT: [[Y:%.*]] = bitcast i32* [[D]] to i8*
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; CHECK-NEXT: [[AM:%.*]] = add i32 [[A]], [[B]]
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; CHECK-NEXT: [[BM:%.*]] = add i32 [[B]], [[A]]
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; CHECK-NEXT: [[CM:%.*]] = add i32 [[B]], [[C]]
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; CHECK-NEXT: [[LT_CAST1:%.*]] = bitcast i32* [[D]] to i8*
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; CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 -1, i8* [[LT_CAST1]])
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; CHECK-NEXT: [[LT_CAST:%.*]] = bitcast i32* [[D]] to i8*
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; CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 -1, i8* [[LT_CAST]])
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; CHECK-NEXT: ret void
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;
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;
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; CHECK-LABEL: @outlined_ir_func_0(
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; CHECK-NEXT: newFuncRoot:
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; CHECK-NEXT: br label [[ENTRY_TO_OUTLINE:%.*]]
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; CHECK: entry_to_outline:
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; CHECK-NEXT: store i32 2, i32* [[TMP0:%.*]], align 4
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; CHECK-NEXT: store i32 3, i32* [[TMP1:%.*]], align 4
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; CHECK-NEXT: store i32 4, i32* [[TMP2:%.*]], align 4
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; CHECK-NEXT: [[X:%.*]] = bitcast i32* [[TMP3:%.*]] to i8*
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; CHECK-NEXT: [[AL:%.*]] = load i32, i32* [[TMP0]], align 4
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; CHECK-NEXT: [[BL:%.*]] = load i32, i32* [[TMP1]], align 4
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; CHECK-NEXT: [[CL:%.*]] = load i32, i32* [[TMP2]], align 4
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; CHECK-NEXT: br label [[ENTRY_AFTER_OUTLINE_EXITSTUB:%.*]]
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; CHECK: entry_after_outline.exitStub:
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; CHECK-NEXT: ret void
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