I'm not sure how to write standalone tests for each of two changes here.
If either one of these two fixes is missing, the test fill crash.
} else if (Operator::getOpcode(V) == Instruction::BitCast ||
Operator::getOpcode(V) == Instruction::AddrSpaceCast) {
V = cast<Operator>(V)->getOperand(0);
+ if (!V->getType()->isPointerTy())
+ return V;
} else if (GlobalAlias *GA = dyn_cast<GlobalAlias>(V)) {
if (GA->isInterposable())
return V;
V = GEP->getPointerOperand();
} else if (Operator::getOpcode(V) == Instruction::BitCast) {
V = cast<Operator>(V)->getOperand(0);
+ if (!V->getType()->isPointerTy())
+ return V;
} else if (StripKind != PSK_ZeroIndicesSameRepresentation &&
Operator::getOpcode(V) == Instruction::AddrSpaceCast) {
// TODO: If we know an address space cast will not change the
--- /dev/null
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt < %s -instsimplify -S | FileCheck %s
+
+target datalayout = "e-p:64:64:64-p1:16:16:16-p2:32:32:32-p3:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
+
+declare void @usei8ptr(i8* %ptr)
+
+; Ensure that we do not crash when looking at such a weird bitcast.
+define i1 @bitcast_from_single_element_pointer_vector_to_pointer(<1 x i8*> %ptr1vec, i8* %ptr2) {
+ %ptr1 = bitcast <1 x i8*> %ptr1vec to i8*
+ call void @usei8ptr(i8* %ptr1)
+ %cmp = icmp eq i8* %ptr1, %ptr2
+ ret i1 %cmp
+}