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Keep valgrind quiet.

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The isLive() method can read uninitialized memory, but it still gives correct
results.

llvm-svn: 108561
This commit is contained in:
Jakob Stoklund Olesen 2010-07-16 22:00:33 +00:00
parent 02dc24e49a
commit 41b1ea4fc9
1 changed files with 6 additions and 1 deletions
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7
lib/Target/X86/X86FloatingPoint.cpp
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@ -50,7 +50,12 @@ STATISTIC(NumFP , "Number of floating point instructions");
namespace {
struct FPS : public MachineFunctionPass {
static char ID;
FPS() : MachineFunctionPass(&ID) {}
FPS() : MachineFunctionPass(&ID) {
// This is really only to keep valgrind quiet.
// The logic in isLive() is too much for it.
memset(Stack, 0, sizeof(Stack));
memset(RegMap, 0, sizeof(RegMap));
}
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesCFG();