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2f69ee6563
This adds a cost model that takes into account the total number of machine instructions to be removed from each region, the number of instructions added by adding a new function with a set of instructions, and the instructions added by handling arguments. Tests not adding flags: llvm/test/Transforms/IROutliner/outlining-cost-model.ll Reviewers: jroelofs, paquette Differential Revision: https://reviews.llvm.org/D87299
111 lines
4.9 KiB
LLVM
111 lines
4.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -iroutliner -ir-outlining-no-cost < %s | FileCheck %s
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; These functions are constructed slightly differently so that they require
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; different output blocks for the values used outside of the region. We are
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; checking that two output blocks are created with different values.
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define void @outline_outputs1() #0 {
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; CHECK-LABEL: @outline_outputs1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[DOTLOC:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[ADD_LOC:%.*]] = alloca i32, align 4
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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: [[OUTPUT:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[RESULT:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[LT_CAST:%.*]] = bitcast i32* [[ADD_LOC]] to i8*
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; CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 -1, i8* [[LT_CAST]])
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; CHECK-NEXT: [[LT_CAST1:%.*]] = bitcast i32* [[DOTLOC]] 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: call void @outlined_ir_func_0(i32* [[A]], i32* [[B]], i32* [[OUTPUT]], i32* [[ADD_LOC]], i32* [[DOTLOC]], i32 0)
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; CHECK-NEXT: [[ADD_RELOAD:%.*]] = load i32, i32* [[ADD_LOC]], align 4
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; CHECK-NEXT: [[DOTRELOAD:%.*]] = load i32, i32* [[DOTLOC]], align 4
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; CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 -1, i8* [[LT_CAST]])
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; CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 -1, i8* [[LT_CAST1]])
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; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[OUTPUT]], align 4
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; CHECK-NEXT: call void @outlined_ir_func_1(i32 [[DOTRELOAD]], i32 [[ADD_RELOAD]], i32* [[RESULT]])
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; CHECK-NEXT: ret void
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;
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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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%output = alloca i32, align 4
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%result = 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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%0 = load i32, i32* %a, align 4
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%1 = load i32, i32* %b, align 4
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%add = add i32 %0, %1
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%sub = sub i32 %0, %1
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store i32 %add, i32* %output, align 4
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%2 = load i32, i32* %output, align 4
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%3 = load i32, i32* %output, align 4
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%mul = mul i32 %2, %add
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store i32 %mul, i32* %result, align 4
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ret void
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}
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define void @outline_outputs2() #0 {
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; CHECK-LABEL: @outline_outputs2(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[DOTLOC:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[SUB_LOC:%.*]] = alloca i32, align 4
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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: [[OUTPUT:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[RESULT:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[LT_CAST:%.*]] = bitcast i32* [[SUB_LOC]] to i8*
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; CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 -1, i8* [[LT_CAST]])
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; CHECK-NEXT: [[LT_CAST1:%.*]] = bitcast i32* [[DOTLOC]] 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: call void @outlined_ir_func_0(i32* [[A]], i32* [[B]], i32* [[OUTPUT]], i32* [[SUB_LOC]], i32* [[DOTLOC]], i32 1)
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; CHECK-NEXT: [[SUB_RELOAD:%.*]] = load i32, i32* [[SUB_LOC]], align 4
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; CHECK-NEXT: [[DOTRELOAD:%.*]] = load i32, i32* [[DOTLOC]], align 4
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; CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 -1, i8* [[LT_CAST]])
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; CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 -1, i8* [[LT_CAST1]])
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; CHECK-NEXT: call void @outlined_ir_func_1(i32 [[DOTRELOAD]], i32 [[SUB_RELOAD]], i32* [[RESULT]])
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; CHECK-NEXT: ret void
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;
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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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%output = alloca i32, align 4
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%result = 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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%0 = load i32, i32* %a, align 4
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%1 = load i32, i32* %b, align 4
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%add = add i32 %0, %1
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%sub = sub i32 %0, %1
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store i32 %add, i32* %output, align 4
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%2 = load i32, i32* %output, align 4
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%mul = mul i32 %2, %sub
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store i32 %mul, i32* %result, align 4
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ret void
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}
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; CHECK: define internal void @outlined_ir_func_0(i32* [[ARG0:%.*]], i32* [[ARG1:%.*]], i32* [[ARG2:%.*]], i32* [[ARG3:%.*]], i32* [[ARG4:%.*]], i32 [[ARG5:%.*]]) #1 {
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; CHECK: _after_outline.exitStub:
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; CHECK-NEXT: switch i32 [[ARG5]], label [[BLOCK:%.*]] [
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; CHECK-NEXT: i32 0, label %[[BLOCK_0:.*]]
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; CHECK-NEXT: i32 1, label %[[BLOCK_1:.*]]
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; CHECK: entry_to_outline:
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; CHECK-NEXT: store i32 2, i32* [[ARG0]], align 4
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; CHECK-NEXT: store i32 3, i32* [[ARG1]], align 4
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; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[ARG0]], align 4
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; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[ARG1]], align 4
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; CHECK-NEXT: [[ADD:%.*]] = add i32 [[TMP0]], [[TMP1]]
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; CHECK-NEXT: [[SUB:%.*]] = sub i32 [[TMP0]], [[TMP1]]
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; CHECK-NEXT: store i32 [[ADD]], i32* [[ARG2]], align 4
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; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[ARG2]], align 4
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; CHECK: [[BLOCK_0]]:
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; CHECK-NEXT: store i32 [[ADD]], i32* [[ARG3]], align 4
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; CHECK-NEXT: store i32 [[TMP2]], i32* [[ARG4]], align 4
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; CHECK: [[BLOCK_1]]:
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; CHECK-NEXT: store i32 [[SUB]], i32* [[ARG3]], align 4
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; CHECK-NEXT: store i32 [[TMP2]], i32* [[ARG4]], align 4
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