[VP] Add missing functional_intrinsic properties and add static_assert. NFC (#66199)

Some VP intrinsic definitions were missing the
VP_PROPERTY_FUNCTIONAL_INTRINSIC property. This patch fills them in, and
adds a static_assert that all VP intrinsics have an equivalent opcode or
intrinsic defined so we don't forget them in future.

Some VP intrinsics don't have an equivalent, namely merge and strided
load/store. For those, a new property was added to mark that they don't
have a non-VP equivalent.

This adds a helper method to get the ID of the functionally equivalent
intrinsic, similar to the existing getFunctionalOpcodeForVP and
getConstrainedIntrinsicIDForVP method.

Author: lukel97

llvm/include/llvm/IR/VPIntrinsics.def

@@ -118,6 +118,11 @@
 #define VP_PROPERTY_FUNCTIONAL_INTRINSIC(INTRIN)
 #endif
 
+// This VP Intrinsic has no functionally-equivalent non-VP opcode or intrinsic.
+#ifndef VP_PROPERTY_NO_FUNCTIONAL
+#define VP_PROPERTY_NO_FUNCTIONAL
+#endif
+
 // This VP Intrinsic is a memory operation
 // The pointer arg is at POINTERPOS and the data arg is at DATAPOS.
 #ifndef VP_PROPERTY_MEMOP
@@ -235,27 +240,32 @@ END_REGISTER_VP(vp_umax, VP_UMAX)
 BEGIN_REGISTER_VP_INTRINSIC(vp_abs, 2, 3)
 BEGIN_REGISTER_VP_SDNODE(VP_ABS, -1, vp_abs, 1, 2)
 HELPER_MAP_VPID_TO_VPSD(vp_abs, VP_ABS)
+VP_PROPERTY_FUNCTIONAL_INTRINSIC(abs)
 VP_PROPERTY_FUNCTIONAL_SDOPC(ABS)
 END_REGISTER_VP(vp_abs, VP_ABS)
 
 // llvm.vp.bswap(x,mask,vlen)
 BEGIN_REGISTER_VP(vp_bswap, 1, 2, VP_BSWAP, -1)
+VP_PROPERTY_FUNCTIONAL_INTRINSIC(bswap)
 VP_PROPERTY_FUNCTIONAL_SDOPC(BSWAP)
 END_REGISTER_VP(vp_bswap, VP_BSWAP)
 
 // llvm.vp.bitreverse(x,mask,vlen)
 BEGIN_REGISTER_VP(vp_bitreverse, 1, 2, VP_BITREVERSE, -1)
+VP_PROPERTY_FUNCTIONAL_INTRINSIC(bitreverse)
 VP_PROPERTY_FUNCTIONAL_SDOPC(BITREVERSE)
 END_REGISTER_VP(vp_bitreverse, VP_BITREVERSE)
 
 // llvm.vp.ctpop(x,mask,vlen)
 BEGIN_REGISTER_VP(vp_ctpop, 1, 2, VP_CTPOP, -1)
+VP_PROPERTY_FUNCTIONAL_INTRINSIC(ctpop)
 VP_PROPERTY_FUNCTIONAL_SDOPC(CTPOP)
 END_REGISTER_VP(vp_ctpop, VP_CTPOP)
 
 // llvm.vp.ctlz(x,is_zero_poison,mask,vlen)
 BEGIN_REGISTER_VP_INTRINSIC(vp_ctlz, 2, 3)
 BEGIN_REGISTER_VP_SDNODE(VP_CTLZ, -1, vp_ctlz, 1, 2)
+VP_PROPERTY_FUNCTIONAL_INTRINSIC(ctlz)
 VP_PROPERTY_FUNCTIONAL_SDOPC(CTLZ)
 END_REGISTER_VP_SDNODE(VP_CTLZ)
 BEGIN_REGISTER_VP_SDNODE(VP_CTLZ_ZERO_UNDEF, -1, vp_ctlz_zero_undef, 1, 2)
@@ -265,6 +275,7 @@ END_REGISTER_VP_INTRINSIC(vp_ctlz)
 // llvm.vp.cttz(x,is_zero_poison,mask,vlen)
 BEGIN_REGISTER_VP_INTRINSIC(vp_cttz, 2, 3)
 BEGIN_REGISTER_VP_SDNODE(VP_CTTZ, -1, vp_cttz, 1, 2)
+VP_PROPERTY_FUNCTIONAL_INTRINSIC(cttz)
 VP_PROPERTY_FUNCTIONAL_SDOPC(CTTZ)
 END_REGISTER_VP_SDNODE(VP_CTTZ)
 BEGIN_REGISTER_VP_SDNODE(VP_CTTZ_ZERO_UNDEF, -1, vp_cttz_zero_undef, 1, 2)
@@ -273,11 +284,13 @@ END_REGISTER_VP_INTRINSIC(vp_cttz)
 
 // llvm.vp.fshl(x,y,z,mask,vlen)
 BEGIN_REGISTER_VP(vp_fshl, 3, 4, VP_FSHL, -1)
+VP_PROPERTY_FUNCTIONAL_INTRINSIC(fshl)
 VP_PROPERTY_FUNCTIONAL_SDOPC(FSHL)
 END_REGISTER_VP(vp_fshl, VP_FSHL)
 
 // llvm.vp.fshr(x,y,z,mask,vlen)
 BEGIN_REGISTER_VP(vp_fshr, 3, 4, VP_FSHR, -1)
+VP_PROPERTY_FUNCTIONAL_INTRINSIC(fshr)
 VP_PROPERTY_FUNCTIONAL_SDOPC(FSHR)
 END_REGISTER_VP(vp_fshr, VP_FSHR)
 ///// } Integer Arithmetic
@@ -323,23 +336,27 @@ END_REGISTER_VP(vp_fneg, VP_FNEG)
 
 // llvm.vp.fabs(x,mask,vlen)
 BEGIN_REGISTER_VP(vp_fabs, 1, 2, VP_FABS, -1)
+VP_PROPERTY_FUNCTIONAL_INTRINSIC(fabs)
 VP_PROPERTY_FUNCTIONAL_SDOPC(FABS)
 END_REGISTER_VP(vp_fabs, VP_FABS)
 
 // llvm.vp.sqrt(x,mask,vlen)
 BEGIN_REGISTER_VP(vp_sqrt, 1, 2, VP_SQRT, -1)
+VP_PROPERTY_FUNCTIONAL_INTRINSIC(sqrt)
 VP_PROPERTY_FUNCTIONAL_SDOPC(FSQRT)
 END_REGISTER_VP(vp_sqrt, VP_SQRT)
 
 // llvm.vp.fma(x,y,z,mask,vlen)
 BEGIN_REGISTER_VP(vp_fma, 3, 4, VP_FMA, -1)
 VP_PROPERTY_CONSTRAINEDFP(1, 1, experimental_constrained_fma)
+VP_PROPERTY_FUNCTIONAL_INTRINSIC(fma)
 VP_PROPERTY_FUNCTIONAL_SDOPC(FMA)
 END_REGISTER_VP(vp_fma, VP_FMA)
 
 // llvm.vp.fmuladd(x,y,z,mask,vlen)
 BEGIN_REGISTER_VP(vp_fmuladd, 3, 4, VP_FMULADD, -1)
 VP_PROPERTY_CONSTRAINEDFP(1, 1, experimental_constrained_fmuladd)
+VP_PROPERTY_FUNCTIONAL_INTRINSIC(fmuladd)
 VP_PROPERTY_FUNCTIONAL_SDOPC(FMAD)
 END_REGISTER_VP(vp_fmuladd, VP_FMULADD)
 
@@ -366,36 +383,43 @@ END_REGISTER_VP(vp_maxnum, VP_FMAXNUM)
 
 // llvm.vp.ceil(x,mask,vlen)
 BEGIN_REGISTER_VP(vp_ceil, 1, 2, VP_FCEIL, -1)
+VP_PROPERTY_FUNCTIONAL_INTRINSIC(ceil)
 VP_PROPERTY_FUNCTIONAL_SDOPC(FCEIL)
 END_REGISTER_VP(vp_ceil, VP_FCEIL)
 
 // llvm.vp.floor(x,mask,vlen)
 BEGIN_REGISTER_VP(vp_floor, 1, 2, VP_FFLOOR, -1)
+VP_PROPERTY_FUNCTIONAL_INTRINSIC(floor)
 VP_PROPERTY_FUNCTIONAL_SDOPC(FFLOOR)
 END_REGISTER_VP(vp_floor, VP_FFLOOR)
 
 // llvm.vp.round(x,mask,vlen)
 BEGIN_REGISTER_VP(vp_round, 1, 2, VP_FROUND, -1)
+VP_PROPERTY_FUNCTIONAL_INTRINSIC(round)
 VP_PROPERTY_FUNCTIONAL_SDOPC(FROUND)
 END_REGISTER_VP(vp_round, VP_FROUND)
 
 // llvm.vp.roundeven(x,mask,vlen)
 BEGIN_REGISTER_VP(vp_roundeven, 1, 2, VP_FROUNDEVEN, -1)
+VP_PROPERTY_FUNCTIONAL_INTRINSIC(roundeven)
 VP_PROPERTY_FUNCTIONAL_SDOPC(FROUNDEVEN)
 END_REGISTER_VP(vp_roundeven, VP_FROUNDEVEN)
 
 // llvm.vp.roundtozero(x,mask,vlen)
 BEGIN_REGISTER_VP(vp_roundtozero, 1, 2, VP_FROUNDTOZERO, -1)
+VP_PROPERTY_FUNCTIONAL_INTRINSIC(trunc)
 VP_PROPERTY_FUNCTIONAL_SDOPC(FTRUNC)
 END_REGISTER_VP(vp_roundtozero, VP_FROUNDTOZERO)
 
 // llvm.vp.rint(x,mask,vlen)
 BEGIN_REGISTER_VP(vp_rint, 1, 2, VP_FRINT, -1)
+VP_PROPERTY_FUNCTIONAL_INTRINSIC(rint)
 VP_PROPERTY_FUNCTIONAL_SDOPC(FRINT)
 END_REGISTER_VP(vp_rint, VP_FRINT)
 
 // llvm.vp.nearbyint(x,mask,vlen)
 BEGIN_REGISTER_VP(vp_nearbyint, 1, 2, VP_FNEARBYINT, -1)
+VP_PROPERTY_FUNCTIONAL_INTRINSIC(nearbyint)
 VP_PROPERTY_FUNCTIONAL_SDOPC(FNEARBYINT)
 END_REGISTER_VP(vp_nearbyint, VP_FNEARBYINT)
 
@@ -499,6 +523,7 @@ END_REGISTER_VP_INTRINSIC(vp_icmp)
 
 // llvm.vp.is.fpclass(on_true,on_false,mask,vlen)
 BEGIN_REGISTER_VP(vp_is_fpclass, 2, 3, VP_IS_FPCLASS, 0)
+VP_PROPERTY_FUNCTIONAL_INTRINSIC(is_fpclass)
 END_REGISTER_VP(vp_is_fpclass, VP_IS_FPCLASS)
 
 ///// Memory Operations {
@@ -515,6 +540,7 @@ END_REGISTER_VP(vp_store, VP_STORE)
 // llvm.experimental.vp.strided.store(val,ptr,stride,mask,vlen)
 BEGIN_REGISTER_VP_INTRINSIC(experimental_vp_strided_store, 3, 4)
 // chain = EXPERIMENTAL_VP_STRIDED_STORE chain,val,base,offset,stride,mask,evl
+VP_PROPERTY_NO_FUNCTIONAL
 BEGIN_REGISTER_VP_SDNODE(EXPERIMENTAL_VP_STRIDED_STORE, 1, experimental_vp_strided_store, 5, 6)
 HELPER_MAP_VPID_TO_VPSD(experimental_vp_strided_store, EXPERIMENTAL_VP_STRIDED_STORE)
 VP_PROPERTY_MEMOP(1, 0)
@@ -542,6 +568,7 @@ END_REGISTER_VP(vp_load, VP_LOAD)
 // llvm.experimental.vp.strided.load(ptr,stride,mask,vlen)
 BEGIN_REGISTER_VP_INTRINSIC(experimental_vp_strided_load, 2, 3)
 // chain = EXPERIMENTAL_VP_STRIDED_LOAD chain,base,offset,stride,mask,evl
+VP_PROPERTY_NO_FUNCTIONAL
 BEGIN_REGISTER_VP_SDNODE(EXPERIMENTAL_VP_STRIDED_LOAD, -1, experimental_vp_strided_load, 4, 5)
 HELPER_MAP_VPID_TO_VPSD(experimental_vp_strided_load, EXPERIMENTAL_VP_STRIDED_LOAD)
 VP_PROPERTY_MEMOP(0, std::nullopt)
@@ -668,9 +695,11 @@ END_REGISTER_VP(vp_select, VP_SELECT)
 
 // llvm.vp.merge(cond,on_true,on_false,pivot)
 BEGIN_REGISTER_VP(vp_merge, std::nullopt, 3, VP_MERGE, -1)
+VP_PROPERTY_NO_FUNCTIONAL
 END_REGISTER_VP(vp_merge, VP_MERGE)
 
 BEGIN_REGISTER_VP(experimental_vp_splice, 3, 5, EXPERIMENTAL_VP_SPLICE, -1)
+VP_PROPERTY_FUNCTIONAL_INTRINSIC(experimental_vector_splice)
 END_REGISTER_VP(experimental_vp_splice, EXPERIMENTAL_VP_SPLICE)
 
 ///// } Shuffles
@@ -689,5 +718,6 @@ END_REGISTER_VP(experimental_vp_splice, EXPERIMENTAL_VP_SPLICE)
 #undef VP_PROPERTY_FUNCTIONAL_INTRINSIC
 #undef VP_PROPERTY_FUNCTIONAL_OPC
 #undef VP_PROPERTY_FUNCTIONAL_SDOPC
+#undef VP_PROPERTY_NO_FUNCTIONAL
 #undef VP_PROPERTY_MEMOP
 #undef VP_PROPERTY_REDUCTION

llvm/lib/IR/IntrinsicInst.cpp

@@ -503,7 +503,7 @@ std::optional<unsigned> VPIntrinsic::getMemoryDataParamPos(Intrinsic::ID VPID) {
   return std::nullopt;
 }
 
-bool VPIntrinsic::isVPIntrinsic(Intrinsic::ID ID) {
+constexpr bool isVPIntrinsic(Intrinsic::ID ID) {
   switch (ID) {
   default:
     break;
@@ -515,34 +515,68 @@ bool VPIntrinsic::isVPIntrinsic(Intrinsic::ID ID) {
   return false;
 }
 
+bool VPIntrinsic::isVPIntrinsic(Intrinsic::ID ID) {
+  return ::isVPIntrinsic(ID);
+}
+
 // Equivalent non-predicated opcode
+constexpr static std::optional<unsigned>
+getFunctionalOpcodeForVP(Intrinsic::ID ID) {
+  switch (ID) {
+  default:
+    break;
+#define BEGIN_REGISTER_VP_INTRINSIC(VPID, ...) case Intrinsic::VPID:
+#define VP_PROPERTY_FUNCTIONAL_OPC(OPC) return Instruction::OPC;
+#define END_REGISTER_VP_INTRINSIC(VPID) break;
+#include "llvm/IR/VPIntrinsics.def"
+  }
+  return std::nullopt;
+}
+
 std::optional<unsigned>
 VPIntrinsic::getFunctionalOpcodeForVP(Intrinsic::ID ID) {
+  return ::getFunctionalOpcodeForVP(ID);
+}
+
+// Equivalent non-predicated intrinsic ID
+constexpr static std::optional<Intrinsic::ID>
+getFunctionalIntrinsicIDForVP(Intrinsic::ID ID) {
   switch (ID) {
   default:
     break;
 #define BEGIN_REGISTER_VP_INTRINSIC(VPID, ...) case Intrinsic::VPID:
-#define VP_PROPERTY_FUNCTIONAL_OPC(OPC) return Instruction::OPC;
+#define VP_PROPERTY_FUNCTIONAL_INTRINSIC(INTRIN) return Intrinsic::INTRIN;
 #define END_REGISTER_VP_INTRINSIC(VPID) break;
 #include "llvm/IR/VPIntrinsics.def"
   }
   return std::nullopt;
 }
 
-// Equivalent non-predicated intrinsic
 std::optional<Intrinsic::ID>
 VPIntrinsic::getFunctionalIntrinsicIDForVP(Intrinsic::ID ID) {
+  return ::getFunctionalIntrinsicIDForVP(ID);
+}
+
+constexpr static bool doesVPHaveNoFunctionalEquivalent(Intrinsic::ID ID) {
   switch (ID) {
   default:
     break;
 #define BEGIN_REGISTER_VP_INTRINSIC(VPID, ...) case Intrinsic::VPID:
-#define VP_PROPERTY_FUNCTIONAL_INTRINSIC(INTRIN) return Intrinsic::INTRIN;
+#define VP_PROPERTY_NO_FUNCTIONAL return true;
 #define END_REGISTER_VP_INTRINSIC(VPID) break;
 #include "llvm/IR/VPIntrinsics.def"
   }
-  return std::nullopt;
+  return false;
 }
 
+// All VP intrinsics should have an equivalent non-VP opcode or intrinsic
+// defined, or be marked that they don't have one.
+#define BEGIN_REGISTER_VP_INTRINSIC(VPID, ...)                                 \
+  static_assert(doesVPHaveNoFunctionalEquivalent(Intrinsic::VPID) ||           \
+                getFunctionalOpcodeForVP(Intrinsic::VPID) ||                   \
+                getFunctionalIntrinsicIDForVP(Intrinsic::VPID));
+#include "llvm/IR/VPIntrinsics.def"
+
 // Equivalent non-predicated constrained intrinsic
 std::optional<Intrinsic::ID>
 VPIntrinsic::getConstrainedIntrinsicIDForVP(Intrinsic::ID ID) {