[PATCH] D59748: [MSP430] Manually set setCC type for vectors

[Afonso Bordado via Phabricator via llvm-commits]

INdek created this revision.
INdek added reviewers: mskvortsov, asl.
Herald added subscribers: llvm-commits, hiraditya.
Herald added a project: LLVM.

Avoids triggering the "No default SetCC type for vectors!" assert.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D59748

Files:
  llvm/lib/Target/MSP430/MSP430ISelLowering.cpp
  llvm/lib/Target/MSP430/MSP430ISelLowering.h
  llvm/test/CodeGen/MSP430/get-setcc-result-type.ll


Index: llvm/test/CodeGen/MSP430/get-setcc-result-type.ll
===================================================================
--- /dev/null
+++ llvm/test/CodeGen/MSP430/get-setcc-result-type.ll
@@ -0,0 +1,22 @@
+; RUN: llc -march=msp430 < %s | FileCheck %s
+
+target datalayout = "e-p:16:8:8-i8:8:8-i8:8:8-i32:8:8"
+target triple = "msp430-generic-generic"
+
+define void @getSetCCResultType(<1 x i16>* %p, <1 x i16>* %q) {
+; CHECK-LABEL: getSetCCResultType:
+; CHECK: tst	0(r12)
+; CHECK-NEXT: mov	r2, r13
+; CHECK-NEXT: rra	r13
+; CHECK-NEXT: and	#1, r13
+; CHECK-NEXT: clr	r14
+; CHECK-NEXT: sub	r13, r14
+; CHECK-NEXT: mov	r14, 0(r12)
+; CHECK-NEXT: ret
+entry:
+  %0 = load <1 x i16>, <1 x i16>* %p, align 16
+  %cmp = icmp eq <1 x i16> %0, zeroinitializer
+  %sext = sext <1 x i1> %cmp to <1 x i16>
+  store <1 x i16> %sext, <1 x i16>* %p, align 16
+  ret void
+}
Index: llvm/lib/Target/MSP430/MSP430ISelLowering.h
===================================================================
--- llvm/lib/Target/MSP430/MSP430ISelLowering.h
+++ llvm/lib/Target/MSP430/MSP430ISelLowering.h
@@ -130,6 +130,8 @@
     MachineBasicBlock *EmitShiftInstr(MachineInstr &MI,
                                       MachineBasicBlock *BB) const;
 
+    EVT getSetCCResultType(const DataLayout &DL, LLVMContext &Context,
+                           EVT VT) const override;
   private:
     SDValue LowerCCCCallTo(SDValue Chain, SDValue Callee,
                            CallingConv::ID CallConv, bool isVarArg,
Index: llvm/lib/Target/MSP430/MSP430ISelLowering.cpp
===================================================================
--- llvm/lib/Target/MSP430/MSP430ISelLowering.cpp
+++ llvm/lib/Target/MSP430/MSP430ISelLowering.cpp
@@ -1603,3 +1603,11 @@
   MI.eraseFromParent(); // The pseudo instruction is gone now.
   return BB;
 }
+
+EVT MSP430TargetLowering::getSetCCResultType(const DataLayout &DL, LLVMContext &,
+                                             EVT VT) const {
+  if (!VT.isVector())
+    return getPointerTy(DL);
+
+  return VT.changeVectorElementTypeToInteger();
+}


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