static Value *SimplifyXorInst(Value *, Value *, const SimplifyQuery &, unsigned);
static Value *SimplifyCastInst(unsigned, Value *, Type *,
const SimplifyQuery &, unsigned);
-static Value *SimplifyGEPInst(Type *, ArrayRef<Value *>, const SimplifyQuery &,
- unsigned);
/// For a boolean type or a vector of boolean type, return false or a vector
/// with every element false.
}
}
- // Same for GEPs.
- if (auto *GEP = dyn_cast<GetElementPtrInst>(I)) {
- if (MaxRecurse) {
- SmallVector<Value *, 8> NewOps(GEP->getNumOperands());
- transform(GEP->operands(), NewOps.begin(),
- [&](Value *V) { return V == Op ? RepOp : V; });
- return SimplifyGEPInst(GEP->getSourceElementType(), NewOps, Q,
- MaxRecurse - 1);
- }
- }
-
// TODO: We could hand off more cases to instsimplify here.
// If all operands are constant after substituting Op for RepOp then we can
ret i8 %sel
}
-define i32* @select_icmp_eq_0_gep_operand(i32* %base, i64 %n) {
-; CHECK-LABEL: @select_icmp_eq_0_gep_operand(
-; CHECK-NEXT: [[GEP:%.*]] = getelementptr
-; CHECK-NEXT: ret i32* [[GEP]]
- %cond = icmp eq i64 %n, 0
- %gep = getelementptr i32, i32* %base, i64 %n
- %r = select i1 %cond, i32* %base, i32* %gep
- ret i32* %r
-}
-
-define i32* @select_icmp_ne_0_gep_operand(i32* %base, i64 %n) {
-; CHECK-LABEL: @select_icmp_ne_0_gep_operand(
-; CHECK-NEXT: [[GEP:%.*]] = getelementptr
-; CHECK-NEXT: ret i32* [[GEP]]
- %cond = icmp ne i64 %n, 0
- %gep = getelementptr i32, i32* %base, i64 %n
- %r = select i1 %cond, i32* %gep, i32* %base
- ret i32* %r
-}