6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-18 13:34:04 +00:00
Code Issues Projects Releases Wiki Activity

Fix PR8906: -fno-builtin should disable loop-idiom recognition.

Browse Source 
It forms memset and memcpy's, and will someday form popcount and
other stuff.  All of this is bad when compiling the implementation
of memset, memcpy, popcount, etc.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122854 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2011-01-05 01:03:32 +00:00
parent 2d31d14bac
commit be478819cb
1 changed files with 4 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
include/llvm/Support/StandardPasses.h
View File

@ -97,7 +97,7 @@ namespace llvm {
bool OptimizeSize,
bool UnitAtATime,
bool UnrollLoops,
bool SimplifyLibCalls,
bool OptimizeBuiltins,
bool HaveExceptions,
Pass *InliningPass) {
createStandardAliasAnalysisPasses(PM);
@ -130,7 +130,7 @@ namespace llvm {
// Start of function pass.
PM->add(createScalarReplAggregatesPass()); // Break up aggregate allocas
PM->add(createEarlyCSEPass()); // Catch trivial redundancies
if (SimplifyLibCalls)
if (OptimizeBuiltins)
PM->add(createSimplifyLibCallsPass()); // Library Call Optimizations
PM->add(createInstructionCombiningPass()); // Cleanup for scalarrepl.
PM->add(createJumpThreadingPass()); // Thread jumps.
@ -146,7 +146,8 @@ namespace llvm {
PM->add(createLoopUnswitchPass(OptimizeSize || OptimizationLevel < 3));
PM->add(createInstructionCombiningPass());
PM->add(createIndVarSimplifyPass()); // Canonicalize indvars
PM->add(createLoopIdiomPass()); // Recognize idioms like memset.
if (OptimizeBuiltins)
PM->add(createLoopIdiomPass()); // Recognize idioms like memset.
PM->add(createLoopDeletionPass()); // Delete dead loops
if (UnrollLoops)
PM->add(createLoopUnrollPass()); // Unroll small loops