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Revert r301880

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This change caused buildbot failures, apparently because we're not
passing around types that InstSimplify is used to seeing. I'm not overly
familiar with InstSimplify, so I'm reverting this until I can figure out
what exactly is wrong.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@301885 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
George Burgess IV 2017-05-01 23:54:41 +00:00
parent 29f8995a43
commit 4d11ee489b
2 changed files with 0 additions and 32 deletions
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13
lib/Analysis/InstructionSimplify.cpp
View File

@ -62,8 +62,6 @@ static Value *SimplifyOrInst(Value *, Value *, const SimplifyQuery &, unsigned);
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.
@ -3493,17 +3491,6 @@ static const Value *SimplifyWithOpReplaced(Value *V, Value *Op, Value *RepOp,
}
}
// 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

19
test/Transforms/InstSimplify/select.ll
View File

@ -431,22 +431,3 @@ define i8 @do_not_assume_sel_cond(i1 %cond, i8 %x, i8 %y) {
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
}