it swaps the LHS/RHS of a single binop.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125700
91177308-0d34-0410-b5e6-
96231b3b80d8
I->setOperand(0, Ops[i].Op);
I->setOperand(1, Ops[i+1].Op);
I->setOperand(0, Ops[i].Op);
I->setOperand(1, Ops[i+1].Op);
- // Conservatively clear all the optional flags, which may not hold
- // after the reassociation.
- I->clearSubclassOptionalData();
+ // Clear all the optional flags, which may not hold after the
+ // reassociation if the expression involved more than just this operation.
+ if (Ops.size() != 2)
+ I->clearSubclassOptionalData();
DEBUG(dbgs() << "TO: " << *I << '\n');
MadeChange = true;
DEBUG(dbgs() << "TO: " << *I << '\n');
MadeChange = true;
%z = add nsw i64 %y, %a
ret i64 %z
}
%z = add nsw i64 %y, %a
ret i64 %z
}
+
+; PR9215
+; CHECK: %s = add nsw i32 %y, %x
+define i32 @test2(i32 %x, i32 %y) {
+ %s = add nsw i32 %x, %y
+ ret i32 %s
+}