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Re-apply the fix on DwarfEHPrepare and add a test #2

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Oct 2, 2021
Merged

Re-apply the fix on DwarfEHPrepare and add a test #2

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f7f91e7
Ad -run-twice to dwarf-eh-prepare.ll
tkf Oct 1, 2021
62f23af
In DwarfEHPrepare, after all passes are run, RewindFunction may be a …
yrnkrn Sep 14, 2014
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5 changes: 5 additions & 0 deletions llvm/lib/CodeGen/DwarfEHPrepare.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -302,6 +302,11 @@ class DwarfEHPrepareLegacyPass : public FunctionPass {
return prepareDwarfEH(OptLevel, RewindFunction, F, TLI, DT, TTI);
}

bool doFinalization(Module &M) override {
RewindFunction = nullptr;
return false;
}

void getAnalysisUsage(AnalysisUsage &AU) const override {
AU.addRequired<TargetPassConfig>();
AU.addRequired<TargetTransformInfoWrapperPass>();
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2 changes: 1 addition & 1 deletion llvm/test/CodeGen/X86/dwarf-eh-prepare.ll
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@@ -1,4 +1,4 @@
; RUN: opt -mtriple=x86_64-linux-gnu -dwarfehprepare -simplifycfg-require-and-preserve-domtree=1 < %s -S | FileCheck %s
; RUN: opt -mtriple=x86_64-linux-gnu -dwarfehprepare -simplifycfg-require-and-preserve-domtree=1 -run-twice < %s -S | FileCheck %s

; Check basic functionality of IR-to-IR DWARF EH preparation. This should
; eliminate resumes. This pass requires a TargetMachine, so we put it under X86
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