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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
67 lines
2.1 KiB
LLVM
67 lines
2.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -verify -iroutliner -ir-outlining-no-cost < %s | FileCheck %s
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; This test checks that we do not outline callbr instruction since as we do not
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; outline any control flow change instructions.
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define i32 @function1(i32 %a, i32 %b) {
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; CHECK-LABEL: @function1(
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; CHECK-NEXT: bb0:
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; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[A:%.*]], 4
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; CHECK-NEXT: call void @outlined_ir_func_0(i32 [[B:%.*]])
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; CHECK-NEXT: callbr void asm "xorl $0, $0
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; CHECK-NEXT: to label [[NORMAL:%.*]] [label %fail1]
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; CHECK: normal:
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; CHECK-NEXT: call void @outlined_ir_func_0(i32 [[B]])
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; CHECK-NEXT: ret i32 0
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; CHECK: fail1:
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; CHECK-NEXT: [[TMP1:%.*]] = add i32 [[B]], 1
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; CHECK-NEXT: [[TMP2:%.*]] = add i32 [[B]], 1
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; CHECK-NEXT: ret i32 0
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;
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bb0:
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%0 = add i32 %a, 4
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%1 = add i32 %b, 1
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%2 = add i32 %b, 1
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callbr void asm "xorl $0, $0; jmp ${1:l}", "r,X,~{dirflag},~{fpsr},~{flags}"(i32 %0, i8* blockaddress(@function1, %fail1)) to label %normal [label %fail1]
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normal:
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%3 = add i32 %b, 1
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%4 = add i32 %b, 1
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ret i32 0
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fail1:
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%5 = add i32 %b, 1
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%6 = add i32 %b, 1
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ret i32 0
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}
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define i32 @function2(i32 %a, i32 %b) {
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; CHECK-LABEL: @function2(
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; CHECK-NEXT: bb0:
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; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[A:%.*]], 4
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; CHECK-NEXT: call void @outlined_ir_func_0(i32 [[B:%.*]])
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; CHECK-NEXT: callbr void asm "xorl $0, $0
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; CHECK-NEXT: to label [[NORMAL:%.*]] [label %fail1]
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; CHECK: normal:
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; CHECK-NEXT: call void @outlined_ir_func_0(i32 [[B]])
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; CHECK-NEXT: ret i32 0
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; CHECK: fail1:
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; CHECK-NEXT: [[TMP1:%.*]] = add i32 [[B]], 1
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; CHECK-NEXT: [[TMP2:%.*]] = add i32 [[B]], 1
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; CHECK-NEXT: ret i32 0
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;
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bb0:
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%0 = add i32 %a, 4
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%1 = add i32 %b, 1
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%2 = add i32 %b, 1
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callbr void asm "xorl $0, $0; jmp ${1:l}", "r,X,~{dirflag},~{fpsr},~{flags}"(i32 %0, i8* blockaddress(@function2, %fail1)) to label %normal [label %fail1]
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normal:
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%3 = add i32 %b, 1
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%4 = add i32 %b, 1
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ret i32 0
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fail1:
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%5 = add i32 %b, 1
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%6 = add i32 %b, 1
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ret i32 0
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}
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