[arm-fast-isel] After promoting a function parameter be sure to update the
argument value type. Otherwise, the sign/zero-extend has no effect on arguments
passed via the stack (i.e., undefined high-order bits).
rdar://10515467
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145701 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMFastISel.cpp b/lib/Target/ARM/ARMFastISel.cpp
index 42fd8a6..086eeb9 100644
--- a/lib/Target/ARM/ARMFastISel.cpp
+++ b/lib/Target/ARM/ARMFastISel.cpp
@@ -1765,21 +1765,23 @@
switch (VA.getLocInfo()) {
case CCValAssign::Full: break;
case CCValAssign::SExt: {
- EVT DestVT = VA.getLocVT();
+ MVT DestVT = VA.getLocVT();
unsigned ResultReg = ARMEmitIntExt(ArgVT, Arg, DestVT,
/*isZExt*/false);
assert (ResultReg != 0 && "Failed to emit a sext");
Arg = ResultReg;
+ ArgVT = DestVT;
break;
}
case CCValAssign::AExt:
// Intentional fall-through. Handle AExt and ZExt.
case CCValAssign::ZExt: {
- EVT DestVT = VA.getLocVT();
+ MVT DestVT = VA.getLocVT();
unsigned ResultReg = ARMEmitIntExt(ArgVT, Arg, DestVT,
/*isZExt*/true);
assert (ResultReg != 0 && "Failed to emit a sext");
Arg = ResultReg;
+ ArgVT = DestVT;
break;
}
case CCValAssign::BCvt: {