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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
75 lines
3.6 KiB
LLVM
75 lines
3.6 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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; This test tests that inputs that are replaced with the output of an outlined
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; function is still recognized as the same value.
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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: [[DOTLOC2:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[ADD2_LOC:%.*]] = alloca i32, align 4
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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: [[OUTPUT2:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[RESULT2:%.*]] = 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 2, i32* [[A]], i32* [[B]], i32* [[OUTPUT]], i32* [[ADD_LOC]], i32* [[DOTLOC]])
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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: br label [[NEXT:%.*]]
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; CHECK: next:
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; CHECK-NEXT: [[LT_CAST4:%.*]] = bitcast i32* [[ADD2_LOC]] to i8*
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; CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 -1, i8* [[LT_CAST4]])
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; CHECK-NEXT: [[LT_CAST5:%.*]] = bitcast i32* [[DOTLOC2]] to i8*
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; CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 -1, i8* [[LT_CAST5]])
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; CHECK-NEXT: call void @outlined_ir_func_0(i32 [[ADD_RELOAD]], i32* [[OUTPUT]], i32* [[RESULT]], i32* [[OUTPUT2]], i32* [[ADD2_LOC]], i32* [[DOTLOC2]])
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; CHECK-NEXT: [[ADD2_RELOAD:%.*]] = load i32, i32* [[ADD2_LOC]], align 4
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; CHECK-NEXT: [[DOTRELOAD3:%.*]] = load i32, i32* [[DOTLOC2]], align 4
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; CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 -1, i8* [[LT_CAST4]])
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; CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 -1, i8* [[LT_CAST5]])
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; CHECK-NEXT: call void @outlined_ir_func_1(i32 [[DOTRELOAD3]], i32 [[ADD2_RELOAD]], i32* [[RESULT2]])
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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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%output2 = alloca i32, align 4
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%result2 = 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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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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br label %next
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next:
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store i32 %add, i32* %output, align 4
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store i32 3, i32* %result, align 4
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%4 = load i32, i32* %output, align 4
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%5 = load i32, i32* %result, align 4
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%add2 = add i32 %4, %5
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store i32 %add2, i32* %output2, align 4
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%6 = load i32, i32* %output2, align 4
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%mul2 = mul i32 %6, %add2
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store i32 %mul2, i32* %result2, align 4
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ret void
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}
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