maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/llvm/test/Transforms/IROutliner/illegal-landingpad.ll

Ignoring revisions in .git-blame-ignore-revs. Click here to bypass and see the normal blame view.

65 lines
2.1 KiB
LLVM
Raw Normal View History

[IRSim][IROutliner] Adding InstVisitor to disallow certain operations. This adds a custom InstVisitor to return false on instructions that should not be allowed to be outlined. These match the illegal instructions in the IRInstructionMapper with exception of the addition of the llvm.assume intrinsic. Tests all the tests marked: illegal-*-.ll with a test for each kind of instruction that has been marked as illegal. Reviewers: jroelofs, paquette Differential Revisions: https://reviews.llvm.org/D86976
2020-09-01 03:55:38 +08:00
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
[IRSim] Adding support for recognizing branch similarity The current IRSimilarityIdentifier does not try to find similarity across blocks, this patch provides a mechanism to compare two branches against one another, to find similarity across basic blocks, rather than just within them. This adds a step in the similarity identification process that labels all of the basic blocks so that we can identify the relative branching locations. Within an IRSimilarityCandidate we use these relative locations to determine whether if the branching to other relative locations in the same region is the same between branches. If they are, we consider them similar. We do not consider the relative location of the branch if the target branch is outside of the region. In this case, both branches must exit to a location outside the region, but the exact relative location does not matter. Reviewers: paquette, yroux Differential Revision: https://reviews.llvm.org/D106989
2021-07-28 22:02:00 +08:00
; RUN: opt -S -verify -iroutliner -no-ir-sim-branch-matching -ir-outlining-no-cost < %s | FileCheck %s
[IRSim][IROutliner] Adding InstVisitor to disallow certain operations. This adds a custom InstVisitor to return false on instructions that should not be allowed to be outlined. These match the illegal instructions in the IRInstructionMapper with exception of the addition of the llvm.assume intrinsic. Tests all the tests marked: illegal-*-.ll with a test for each kind of instruction that has been marked as illegal. Reviewers: jroelofs, paquette Differential Revisions: https://reviews.llvm.org/D86976
2020-09-01 03:55:38 +08:00
; This test checks that landingpad instructions are not outlined even if they
; in a similar section. Dealing with exception handling inside of an outlined
; function would require a lot of handling that is not implemented yet.
declare void @llvm.donothing() nounwind readnone
define void @function1() personality i8 3 {
; CHECK-LABEL: @function1(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[B:%.*]] = alloca i32, align 4
; CHECK-NEXT: invoke void @llvm.donothing()
; CHECK-NEXT: to label [[NORMAL:%.*]] unwind label [[EXCEPTION:%.*]]
; CHECK: exception:
; CHECK-NEXT: [[CLEANUP:%.*]] = landingpad i8
; CHECK-NEXT: cleanup
[IROutliner] Deduplicating functions that only require inputs. Extracted regions can have both inputs and outputs. In addition, the CodeExtractor removes inputs that are only used in llvm.assumes, and sunken allocas (values are used entirely in the extracted region as denoted by lifetime intrinsics). We also cannot combine sections that have different constants in the same structural location, and these constants will have to elevated to argument. This patch deduplicates extracted functions that only have inputs and non of the special cases. We test that correctly deduplicate in: test/Transforms/IROutliner/outlining-same-globals.ll test/Transforms/IROutliner/outlining-same-constants.ll test/Transforms/IROutliner/outlining-different-structure.ll Reviewers: jroelofs, paquette Differential Revision: https://reviews.llvm.org/D86978
2020-08-28 04:16:37 +08:00
; CHECK-NEXT: call void @outlined_ir_func_0(i32* [[A]], i32* [[B]])
[IRSim][IROutliner] Adding InstVisitor to disallow certain operations. This adds a custom InstVisitor to return false on instructions that should not be allowed to be outlined. These match the illegal instructions in the IRInstructionMapper with exception of the addition of the llvm.assume intrinsic. Tests all the tests marked: illegal-*-.ll with a test for each kind of instruction that has been marked as illegal. Reviewers: jroelofs, paquette Differential Revisions: https://reviews.llvm.org/D86976
2020-09-01 03:55:38 +08:00
; CHECK-NEXT: br label [[NORMAL]]
; CHECK: normal:
; CHECK-NEXT: ret void
;
entry:
%a = alloca i32, align 4
%b = alloca i32, align 4
invoke void @llvm.donothing() to label %normal unwind label %exception
exception:
%cleanup = landingpad i8 cleanup
store i32 2, i32* %a, align 4
store i32 3, i32* %b, align 4
br label %normal
normal:
ret void
}
define void @function2() personality i8 3 {
; CHECK-LABEL: @function2(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[B:%.*]] = alloca i32, align 4
; CHECK-NEXT: invoke void @llvm.donothing()
; CHECK-NEXT: to label [[NORMAL:%.*]] unwind label [[EXCEPTION:%.*]]
; CHECK: exception:
; CHECK-NEXT: [[CLEANUP:%.*]] = landingpad i8
; CHECK-NEXT: cleanup
[IROutliner] Deduplicating functions that only require inputs. Extracted regions can have both inputs and outputs. In addition, the CodeExtractor removes inputs that are only used in llvm.assumes, and sunken allocas (values are used entirely in the extracted region as denoted by lifetime intrinsics). We also cannot combine sections that have different constants in the same structural location, and these constants will have to elevated to argument. This patch deduplicates extracted functions that only have inputs and non of the special cases. We test that correctly deduplicate in: test/Transforms/IROutliner/outlining-same-globals.ll test/Transforms/IROutliner/outlining-same-constants.ll test/Transforms/IROutliner/outlining-different-structure.ll Reviewers: jroelofs, paquette Differential Revision: https://reviews.llvm.org/D86978
2020-08-28 04:16:37 +08:00
; CHECK-NEXT: call void @outlined_ir_func_0(i32* [[A]], i32* [[B]])
[IRSim][IROutliner] Adding InstVisitor to disallow certain operations. This adds a custom InstVisitor to return false on instructions that should not be allowed to be outlined. These match the illegal instructions in the IRInstructionMapper with exception of the addition of the llvm.assume intrinsic. Tests all the tests marked: illegal-*-.ll with a test for each kind of instruction that has been marked as illegal. Reviewers: jroelofs, paquette Differential Revisions: https://reviews.llvm.org/D86976
2020-09-01 03:55:38 +08:00
; CHECK-NEXT: br label [[NORMAL]]
; CHECK: normal:
; CHECK-NEXT: ret void
;
entry:
%a = alloca i32, align 4
%b = alloca i32, align 4
invoke void @llvm.donothing() to label %normal unwind label %exception
exception:
%cleanup = landingpad i8 cleanup
store i32 2, i32* %a, align 4
store i32 3, i32* %b, align 4
br label %normal
normal:
ret void
}