diff options
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/CodeGenPrepare.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/CodeGenPrepare.cpp b/llvm/lib/CodeGen/CodeGenPrepare.cpp index d102ccbd1b8..be1e5268927 100644 --- a/llvm/lib/CodeGen/CodeGenPrepare.cpp +++ b/llvm/lib/CodeGen/CodeGenPrepare.cpp @@ -4232,6 +4232,10 @@ bool CodeGenPrepare::extLdPromotion(TypePromotionTransaction &TPT, /// promotions apply. /// bool CodeGenPrepare::moveExtToFormExtLoad(Instruction *&I) { + // ExtLoad formation infrastructure requires TLI to be effective. + if (!TLI) + return false; + // Try to promote a chain of computation if it allows to form // an extended load. TypePromotionTransaction TPT; @@ -4261,7 +4265,7 @@ bool CodeGenPrepare::moveExtToFormExtLoad(Instruction *&I) { // If the load has other users and the truncate is not free, this probably // isn't worthwhile. - if (!LI->hasOneUse() && TLI && + if (!LI->hasOneUse() && (TLI->isTypeLegal(LoadVT) || !TLI->isTypeLegal(VT)) && !TLI->isTruncateFree(I->getType(), LI->getType())) { I = OldExt; @@ -4277,7 +4281,7 @@ bool CodeGenPrepare::moveExtToFormExtLoad(Instruction *&I) { assert(isa<SExtInst>(I) && "Unexpected ext type!"); LType = ISD::SEXTLOAD; } - if (TLI && !TLI->isLoadExtLegal(LType, VT, LoadVT)) { + if (!TLI->isLoadExtLegal(LType, VT, LoadVT)) { I = OldExt; TPT.rollback(LastKnownGood); return false; |
