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[PM] Setup TargetLibraryInfo correctly for the new pass manager. 

Without this, -fno-builtin and friends doesn't work. Added the obvious
RUN lines to the test for -fno-builtin and they pass now.

llvm-svn: 308967
This commit is contained in:
Chandler Carruth 2017-07-25 10:46:07 +00:00
parent 2f21017be2
commit 9fdd5fa5e0
2 changed files with 12 additions and 0 deletions
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8
clang/lib/CodeGen/BackendUtil.cpp
View File

@ -871,6 +871,14 @@ void EmitAssemblyHelper::EmitAssemblyWithNewPassManager(
// Register the AA manager first so that our version is the one used.
FAM.registerPass([&] { return PB.buildDefaultAAPipeline(); });
// Register the target library analysis directly and give it a customized
// preset TLI.
Triple TargetTriple(TheModule->getTargetTriple());
std::unique_ptr<TargetLibraryInfoImpl> TLII(
createTLII(TargetTriple, CodeGenOpts));
FAM.registerPass([&] { return TargetLibraryAnalysis(*TLII); });
MAM.registerPass([&] { return TargetLibraryAnalysis(*TLII); });
// Register all the basic analyses with the managers.
PB.registerModuleAnalyses(MAM);
PB.registerCGSCCAnalyses(CGAM);

4
clang/test/CodeGen/nobuiltin.c
View File

@ -4,6 +4,10 @@
// RUN: %clang_cc1 -triple x86_64-linux-gnu -fno-builtin -O1 -S -o - %s | FileCheck -check-prefix=NOSTRCPY -check-prefix=NOMEMSET %s
// RUN: %clang_cc1 -triple x86_64-linux-gnu -fno-builtin-memset -O1 -S -o - %s | FileCheck -check-prefix=STRCPY -check-prefix=NOMEMSET %s
// RUN: %clang_cc1 -triple x86_64-linux-gnu -O1 -fexperimental-new-pass-manager -S -o - %s | FileCheck -check-prefix=STRCPY -check-prefix=MEMSET %s
// RUN: %clang_cc1 -triple x86_64-linux-gnu -fno-builtin -O1 -fexperimental-new-pass-manager -S -o - %s | FileCheck -check-prefix=NOSTRCPY -check-prefix=NOMEMSET %s
// RUN: %clang_cc1 -triple x86_64-linux-gnu -fno-builtin-memset -O1 -fexperimental-new-pass-manager -S -o - %s | FileCheck -check-prefix=STRCPY -check-prefix=NOMEMSET %s
void PR13497() {
char content[2];
// make sure we don't optimize this call to strcpy()