clang hangs/takes a really long time compiling sqlite

[jrmuizel]

Bugzilla Link	11169
Resolution	INVALID
Resolved on	Oct 18, 2011 18:54
Version	trunk
OS	All
CC	@efriedma-quic,@tkremenek

Extended Description

clang version 3.0 (http://llvm.org/git/clang.git af37061fea31f3f1d0638edb5486e8d72c701522)

It is spending time in
llvm::InstCombiner::runOnFunction(llvm::Function&)
llvm::InstCombiner::DoOneIteration(llvm::Function&, unsigned int)
llvm::InstVisitor<llvm::InstCombiner, llvm::Instruction*>::visit(llvm::Instruction&)
llvm::InstVisitor<llvm::InstCombiner, llvm::Instruction*>::visitLoad(llvm::LoadInst&)
llvm::InstCombiner::visitLoadInst(llvm::LoadInst&)
etc.

The preprocessed input is at:

http://people.mozilla.org/~jmuizelaar/sqlite3.i.gz

clang -O2 sqlite3.i

on OSX x86-64

[tkremenek]

Cloned to rdar://problem/10305390.

[efriedma-quic]

I can't reproduce any issue with r142416 (built just now); the given preprocessed source compiles in around 20 seconds to me, and -ftime-report doesn't show anything unusual.

[llvmbot]

Compile time seems reasonable given the size of the input.

[jrmuizel]

I was using the wrong build of clang. Sorry.