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[PM] Introduce a utility pass that preserves no analyses.

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Use this to test that path of invalidation. This test actually shows
redundant invalidation here that is really bad. I'm going to work on
fixing that next, but wanted to commit the test harness now that its all
working.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225257 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chandler Carruth
2015-01-06 09:06:35 +00:00
parent f6145affbf
commit 0df89054c0
3 changed files with 50 additions and 0 deletions
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3
tools/opt/PassRegistry.def
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@@ -26,6 +26,7 @@ MODULE_ANALYSIS("no-op-module", NoOpModuleAnalysis())
#ifndef MODULE_PASS
#define MODULE_PASS(NAME, CREATE_PASS)
#endif
MODULE_PASS("invalidate<all>", InvalidateAllAnalysesPass())
MODULE_PASS("no-op-module", NoOpModulePass())
MODULE_PASS("print", PrintModulePass(dbgs()))
MODULE_PASS("print-cg", LazyCallGraphPrinterPass(dbgs()))
@@ -41,6 +42,7 @@ CGSCC_ANALYSIS("no-op-cgscc", NoOpCGSCCAnalysis())
#ifndef CGSCC_PASS
#define CGSCC_PASS(NAME, CREATE_PASS)
#endif
CGSCC_PASS("invalidate<all>", InvalidateAllAnalysesPass())
CGSCC_PASS("no-op-cgscc", NoOpCGSCCPass())
#undef CGSCC_PASS
@@ -53,6 +55,7 @@ FUNCTION_ANALYSIS("no-op-function", NoOpFunctionAnalysis())
#ifndef FUNCTION_PASS
#define FUNCTION_PASS(NAME, CREATE_PASS)
#endif
FUNCTION_PASS("invalidate<all>", InvalidateAllAnalysesPass())
FUNCTION_PASS("no-op-function", NoOpFunctionPass())
FUNCTION_PASS("print", PrintFunctionPass(dbgs()))
FUNCTION_PASS("verify", VerifierPass())