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https://github.com/c64scene-ar/llvm-6502.git
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7312a22ed6
'or sequence' that it doesn't understand. This allows us to optimize something insane like this: int crud (unsigned char c, unsigned x) { if(((((((((( (int) c <= 32 || (int) c == 46) || (int) c == 44) || (int) c == 58) || (int) c == 59) || (int) c == 60) || (int) c == 62) || (int) c == 34) || (int) c == 92) || (int) c == 39) != 0) foo(); } into: define i32 @crud(i8 zeroext %c, i32 %x) nounwind ssp noredzone { entry: %cmp = icmp ult i8 %c, 33 br i1 %cmp, label %if.then, label %switch.early.test switch.early.test: ; preds = %entry switch i8 %c, label %if.end [ i8 39, label %if.then i8 44, label %if.then i8 58, label %if.then i8 59, label %if.then i8 60, label %if.then i8 62, label %if.then i8 46, label %if.then i8 92, label %if.then i8 34, label %if.then ] by pulling the < comparison out ahead of the newly formed switch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121680 91177308-0d34-0410-b5e6-96231b3b80d8 |
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.. | ||
ADCE | ||
ArgumentPromotion | ||
BlockPlacement | ||
BranchFolding | ||
CodeExtractor | ||
CodeGenPrepare | ||
ConstantMerge | ||
ConstProp | ||
CorrelatedValuePropagation | ||
DeadArgElim | ||
DeadStoreElimination | ||
FunctionAttrs | ||
GlobalDCE | ||
GlobalOpt | ||
GVN | ||
IndVarSimplify | ||
Inline | ||
InstCombine | ||
Internalize | ||
IPConstantProp | ||
JumpThreading | ||
LCSSA | ||
LICM | ||
LoopDeletion | ||
LoopRotate | ||
LoopSimplify | ||
LoopStrengthReduce | ||
LoopUnroll | ||
LoopUnswitch | ||
LowerAtomic | ||
LowerInvoke | ||
LowerSetJmp | ||
LowerSwitch | ||
Mem2Reg | ||
MemCpyOpt | ||
MergeFunc | ||
PartialSpecialize | ||
PruneEH | ||
Reassociate | ||
ScalarRepl | ||
SCCP | ||
SimplifyCFG | ||
SimplifyLibCalls | ||
Sink | ||
SRETPromotion | ||
StripSymbols | ||
TailCallElim | ||
TailDup |