c23b4fbdbb
Now that #149310 has restricted lifetime intrinsics to only work on allocas, we can also drop the explicit size argument. Instead, the size is implied by the alloca. This removes the ability to only mark a prefix of an alloca alive/dead. We never used that capability, so we should remove the need to handle that possibility everywhere (though many key places, including stack coloring, did not actually respect this).
128 lines
4.5 KiB
LLVM
128 lines
4.5 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 -passes=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.p0(ptr nocapture)
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declare void @llvm.lifetime.end.p0(ptr 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, ptr %a, align 4
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store i32 3, ptr %b, align 4
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store i32 4, ptr %c, align 4
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%al = load i32, ptr %a
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%bl = load i32, ptr %b
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%cl = load i32, ptr %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, ptr %a, align 4
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store i32 3, ptr %b, align 4
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store i32 4, ptr %c, align 4
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%al = load i32, ptr %a
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%bl = load i32, ptr %b
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%cl = load i32, ptr %c
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call void @llvm.lifetime.start.p0(ptr %d)
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%am = load i32, ptr %b
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%bm = load i32, ptr %a
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%cm = load i32, ptr %c
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call void @llvm.lifetime.end.p0(ptr %d)
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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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%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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%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.p0(ptr %d)
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call void @llvm.lifetime.end.p0(ptr %d)
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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(ptr [[A]], ptr [[B]], ptr [[C]])
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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: call void @outlined_ir_func_0(ptr [[A]], ptr [[B]], ptr [[C]])
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; CHECK-NEXT: [[AM:%.*]] = load i32, ptr [[B]], align 4
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; CHECK-NEXT: [[BM:%.*]] = load i32, ptr [[A]], align 4
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; CHECK-NEXT: [[CM:%.*]] = load i32, ptr [[C]], align 4
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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: call void @outlined_ir_func_1(i32 [[A:%.*]], i32 [[B:%.*]], i32 [[C:%.*]])
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; CHECK-NEXT: [[BUFFER:%.*]] = mul i32 [[A]], [[B]]
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; CHECK-NEXT: call void @outlined_ir_func_1(i32 [[A]], i32 [[B]], i32 [[C]])
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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, ptr [[TMP0:%.*]], align 4
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; CHECK-NEXT: store i32 3, ptr [[TMP1:%.*]], align 4
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; CHECK-NEXT: store i32 4, ptr [[TMP2:%.*]], align 4
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; CHECK-NEXT: [[AL:%.*]] = load i32, ptr [[TMP0]], align 4
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; CHECK-NEXT: [[BL:%.*]] = load i32, ptr [[TMP1]], align 4
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; CHECK-NEXT: [[CL:%.*]] = load i32, ptr [[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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;
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;
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; CHECK-LABEL: @outlined_ir_func_1(
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; CHECK-NEXT: newFuncRoot:
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; CHECK-NEXT: [[D:%.*]] = alloca i32, align 4
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; CHECK-NEXT: call void @llvm.lifetime.start.p0(ptr [[D]])
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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: [[AL:%.*]] = add i32 [[TMP0:%.*]], [[TMP1:%.*]]
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; CHECK-NEXT: [[BL:%.*]] = add i32 [[TMP1]], [[TMP0]]
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; CHECK-NEXT: [[CL:%.*]] = add i32 [[TMP1]], [[TMP2:%.*]]
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; CHECK-NEXT: call void @llvm.lifetime.end.p0(ptr [[D]])
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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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;
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