// us to prove better alignment.
unsigned Alignment = 1;
AAMDNodes AATags;
+ bool HasDedicatedExits = CurLoop->hasDedicatedExits();
// Check that all of the pointers in the alias set have the same type. We
// cannot (yet) promote a memory location that is loaded and stored in
assert(!store->isVolatile() && "AST broken");
if (!store->isSimple())
return;
+ // Don't sink stores from loops without dedicated block exits. Exits
+ // containing indirect branches are not transformed by loop simplify,
+ // make sure we catch that.
+ if (!HasDedicatedExits)
+ return;
// Note that we only check GuaranteedToExecute inside the store case
// so that we do not introduce stores where they did not exist before
ret i32 %lcssa
}
+; Can't sink stores out of exit blocks containing indirectbr instructions
+; because loop simplify does not create dedicated exits for such blocks. Test
+; that by sinking the store from lab21 to lab22, but not further.
+define void @test12() {
+; CHECK-LABEL: @test12
+ br label %lab4
+
+lab4:
+ br label %lab20
+
+lab5:
+ br label %lab20
+
+lab6:
+ br label %lab4
+
+lab7:
+ br i1 undef, label %lab8, label %lab13
+
+lab8:
+ br i1 undef, label %lab13, label %lab10
+
+lab10:
+ br label %lab7
+
+lab13:
+ ret void
+
+lab20:
+ br label %lab21
+
+lab21:
+; CHECK: lab21:
+; CHECK-NOT: store
+; CHECK: br i1 false, label %lab21, label %lab22
+ store i32 36127957, i32* undef, align 4
+ br i1 undef, label %lab21, label %lab22
+
+lab22:
+; CHECK: lab22:
+; CHECK: store
+; CHECK-NEXT: indirectbr i8* undef
+ indirectbr i8* undef, [label %lab5, label %lab6, label %lab7]
+}
+
declare void @f(i32*)
declare void @g()