Implement 48-bit libcalls

Author: jacobly0

llvm/include/llvm/IR/RuntimeLibcalls.def

@@ -36,39 +36,46 @@ HANDLE_LIBCALL(SEXT_I24_I32, nullptr)
 HANDLE_LIBCALL(NOT_I16, nullptr)
 HANDLE_LIBCALL(NOT_I24, nullptr)
 HANDLE_LIBCALL(NOT_I32, nullptr)
+HANDLE_LIBCALL(NOT_I48, nullptr)
 HANDLE_LIBCALL(NOT_I64, nullptr)
 HANDLE_LIBCALL(AND_I8, nullptr)
 HANDLE_LIBCALL(AND_I16, nullptr)
 HANDLE_LIBCALL(AND_I24, nullptr)
 HANDLE_LIBCALL(AND_I32, nullptr)
+HANDLE_LIBCALL(AND_I48, nullptr)
 HANDLE_LIBCALL(AND_I64, nullptr)
 HANDLE_LIBCALL(AND_I128, nullptr)
 HANDLE_LIBCALL(OR_I8, nullptr)
 HANDLE_LIBCALL(OR_I16, nullptr)
 HANDLE_LIBCALL(OR_I24, nullptr)
 HANDLE_LIBCALL(OR_I32, nullptr)
+HANDLE_LIBCALL(OR_I48, nullptr)
 HANDLE_LIBCALL(OR_I64, nullptr)
 HANDLE_LIBCALL(OR_I128, nullptr)
 HANDLE_LIBCALL(XOR_I8, nullptr)
 HANDLE_LIBCALL(XOR_I16, nullptr)
 HANDLE_LIBCALL(XOR_I24, nullptr)
 HANDLE_LIBCALL(XOR_I32, nullptr)
+HANDLE_LIBCALL(XOR_I48, nullptr)
 HANDLE_LIBCALL(XOR_I64, nullptr)
 HANDLE_LIBCALL(XOR_I128, nullptr)
 HANDLE_LIBCALL(SHL_I8, nullptr)
 HANDLE_LIBCALL(SHL_I16, "__ashlhi3")
 HANDLE_LIBCALL(SHL_I24, nullptr)
 HANDLE_LIBCALL(SHL_I32, "__ashlsi3")
+HANDLE_LIBCALL(SHL_I48, nullptr)
 HANDLE_LIBCALL(SHL_I64, "__ashldi3")
 HANDLE_LIBCALL(SHL_I128, "__ashlti3")
 HANDLE_LIBCALL(SHL_I16_I8, nullptr)
 HANDLE_LIBCALL(SHL_I24_I8, nullptr)
+HANDLE_LIBCALL(SHL_I48_I8, nullptr)
 HANDLE_LIBCALL(SRL_I8, nullptr)
 HANDLE_LIBCALL(SRL_I16, "__lshrhi3")
 HANDLE_LIBCALL(SRL_I16_I8, nullptr)
 HANDLE_LIBCALL(SRL_I24, nullptr)
 HANDLE_LIBCALL(SRL_I24_I8, nullptr)
 HANDLE_LIBCALL(SRL_I32, "__lshrsi3")
+HANDLE_LIBCALL(SRL_I48, nullptr)
 HANDLE_LIBCALL(SRL_I64, "__lshrdi3")
 HANDLE_LIBCALL(SRL_I128, "__lshrti3")
 HANDLE_LIBCALL(SRA_I8, nullptr)
@@ -77,17 +84,21 @@ HANDLE_LIBCALL(SRA_I16_I8, nullptr)
 HANDLE_LIBCALL(SRA_I24, nullptr)
 HANDLE_LIBCALL(SRA_I24_I8, nullptr)
 HANDLE_LIBCALL(SRA_I32, "__ashrsi3")
+HANDLE_LIBCALL(SRA_I48, nullptr)
 HANDLE_LIBCALL(SRA_I64, "__ashrdi3")
 HANDLE_LIBCALL(SRA_I128, "__ashrti3")
 HANDLE_LIBCALL(CMP_I32, nullptr)
+HANDLE_LIBCALL(CMP_I48, nullptr)
 HANDLE_LIBCALL(CMP_I64, nullptr)
 HANDLE_LIBCALL(CMP_I16_0, nullptr)
 HANDLE_LIBCALL(CMP_I24_0, nullptr)
 HANDLE_LIBCALL(CMP_I32_0, nullptr)
+HANDLE_LIBCALL(CMP_I48_0, nullptr)
 HANDLE_LIBCALL(CMP_I64_0, nullptr)
 HANDLE_LIBCALL(SCMP_I16, nullptr)
 HANDLE_LIBCALL(SCMP_I24, nullptr)
 HANDLE_LIBCALL(SCMP_I32, nullptr)
+HANDLE_LIBCALL(SCMP_I48, nullptr)
 HANDLE_LIBCALL(SCMP_I64, nullptr)
 HANDLE_LIBCALL(SCMP, nullptr)
 HANDLE_LIBCALL(ADD_I32, nullptr)
@@ -102,6 +113,7 @@ HANDLE_LIBCALL(MUL_I16, "__mulhi3")
 HANDLE_LIBCALL(MUL_I24, nullptr)
 HANDLE_LIBCALL(MUL_I24_I8, nullptr)
 HANDLE_LIBCALL(MUL_I32, "__mulsi3")
+HANDLE_LIBCALL(MUL_I48, nullptr)
 HANDLE_LIBCALL(MUL_I64, "__muldi3")
 HANDLE_LIBCALL(MUL_I128, "__multi3")
 HANDLE_LIBCALL(MULO_I32, "__mulosi4")
@@ -111,63 +123,74 @@ HANDLE_LIBCALL(SDIV_I8, "__divqi3")
 HANDLE_LIBCALL(SDIV_I16, "__divhi3")
 HANDLE_LIBCALL(SDIV_I24, nullptr)
 HANDLE_LIBCALL(SDIV_I32, "__divsi3")
+HANDLE_LIBCALL(SDIV_I48, nullptr)
 HANDLE_LIBCALL(SDIV_I64, "__divdi3")
 HANDLE_LIBCALL(SDIV_I128, "__divti3")
 HANDLE_LIBCALL(UDIV_I8, "__udivqi3")
 HANDLE_LIBCALL(UDIV_I16, "__udivhi3")
 HANDLE_LIBCALL(UDIV_I24, nullptr)
 HANDLE_LIBCALL(UDIV_I32, "__udivsi3")
+HANDLE_LIBCALL(UDIV_I48, nullptr)
 HANDLE_LIBCALL(UDIV_I64, "__udivdi3")
 HANDLE_LIBCALL(UDIV_I128, "__udivti3")
 HANDLE_LIBCALL(SREM_I8, "__modqi3")
 HANDLE_LIBCALL(SREM_I16, "__modhi3")
 HANDLE_LIBCALL(SREM_I24, nullptr)
 HANDLE_LIBCALL(SREM_I32, "__modsi3")
+HANDLE_LIBCALL(SREM_I48, nullptr)
 HANDLE_LIBCALL(SREM_I64, "__moddi3")
 HANDLE_LIBCALL(SREM_I128, "__modti3")
 HANDLE_LIBCALL(UREM_I8, "__umodqi3")
 HANDLE_LIBCALL(UREM_I16, "__umodhi3")
 HANDLE_LIBCALL(UREM_I24, nullptr)
 HANDLE_LIBCALL(UREM_I32, "__umodsi3")
+HANDLE_LIBCALL(UREM_I48, nullptr)
 HANDLE_LIBCALL(UREM_I64, "__umoddi3")
 HANDLE_LIBCALL(UREM_I128, "__umodti3")
 HANDLE_LIBCALL(SDIVREM_I8, nullptr)
 HANDLE_LIBCALL(SDIVREM_I16, nullptr)
 HANDLE_LIBCALL(SDIVREM_I24, nullptr)
 HANDLE_LIBCALL(SDIVREM_I32, nullptr)
 HANDLE_LIBCALL(SDIVREM_I64, nullptr)
+HANDLE_LIBCALL(SDIVREM_I48, nullptr)
 HANDLE_LIBCALL(SDIVREM_I128, nullptr)
 HANDLE_LIBCALL(UDIVREM_I8, nullptr)
 HANDLE_LIBCALL(UDIVREM_I16, nullptr)
 HANDLE_LIBCALL(UDIVREM_I24, nullptr)
 HANDLE_LIBCALL(UDIVREM_I32, nullptr)
+HANDLE_LIBCALL(UDIVREM_I48, nullptr)
 HANDLE_LIBCALL(UDIVREM_I64, nullptr)
 HANDLE_LIBCALL(UDIVREM_I128, nullptr)
 
 HANDLE_LIBCALL(NEG_I16, nullptr)
 HANDLE_LIBCALL(NEG_I24, nullptr)
 HANDLE_LIBCALL(NEG_I32, "__negsi2")
+HANDLE_LIBCALL(NEG_I48, nullptr)
 HANDLE_LIBCALL(NEG_I64, "__negdi2")
 HANDLE_LIBCALL(CTLZ_I8, nullptr)
 HANDLE_LIBCALL(CTLZ_I16, nullptr)
 HANDLE_LIBCALL(CTLZ_I24, nullptr)
 HANDLE_LIBCALL(CTLZ_I32, "__clzsi2")
+HANDLE_LIBCALL(CTLZ_I48, nullptr)
 HANDLE_LIBCALL(CTLZ_I64, "__clzdi2")
 HANDLE_LIBCALL(CTLZ_I128, "__clzti2")
 HANDLE_LIBCALL(POPCNT_I8, nullptr)
 HANDLE_LIBCALL(POPCNT_I16, nullptr)
 HANDLE_LIBCALL(POPCNT_I24, nullptr)
 HANDLE_LIBCALL(POPCNT_I32, "__popcountsi2")
+HANDLE_LIBCALL(POPCNT_I48, nullptr)
 HANDLE_LIBCALL(POPCNT_I64, "__popcountdi2")
 HANDLE_LIBCALL(POPCNT_I128, nullptr)
 HANDLE_LIBCALL(BITREV_I8, nullptr)
 HANDLE_LIBCALL(BITREV_I16, nullptr)
 HANDLE_LIBCALL(BITREV_I24, nullptr)
 HANDLE_LIBCALL(BITREV_I32, nullptr)
+HANDLE_LIBCALL(BITREV_I48, nullptr)
 HANDLE_LIBCALL(BITREV_I64, nullptr)
 HANDLE_LIBCALL(BITREV_I128, nullptr)
 HANDLE_LIBCALL(BSWAP_I32, nullptr)
 HANDLE_LIBCALL(BSWAP_I64, nullptr)
+HANDLE_LIBCALL(BSWAP_I48, nullptr)
 HANDLE_LIBCALL(BSWAP_I128, nullptr)
 
 // Floating-point

llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp

@@ -524,6 +524,8 @@ static RTLIB::Libcall getRTLibDesc(unsigned Opcode, unsigned Size) {
       return RTLIB::LibcallPrefix##24;                                         \
     case 32:                                                                   \
       return RTLIB::LibcallPrefix##32;                                         \
+    case 48:                                                                   \
+      return RTLIB::LibcallPrefix##48;                                         \
     case 64:                                                                   \
       return RTLIB::LibcallPrefix##64;                                         \
     case 128:                                                                  \

llvm/lib/Target/Z80/GISel/Z80LegalizerInfo.cpp

@@ -60,7 +60,7 @@ Z80LegalizerInfo::Z80LegalizerInfo(const Z80Subtarget &STI,
   auto LegalScalars24 = {s8, s16, s24};
   auto LegalScalars16 = {s8, s16};
   auto LegalScalars = Is24Bit ? LegalScalars24 : LegalScalars16;
-  auto LegalLibcallScalars24 = {s8, s16, s24, s32, s64};
+  auto LegalLibcallScalars24 = {s8, s16, s24, s32, s48, s64};
   auto LegalLibcallScalars16 = {s8, s16, s32, s64};
   auto LegalLibcallScalars =
       Is24Bit ? LegalLibcallScalars24 : LegalLibcallScalars16;
@@ -158,6 +158,7 @@ Z80LegalizerInfo::Z80LegalizerInfo(const Z80Subtarget &STI,
 
   getActionDefinitionsBuilder({G_ADD, G_SUB})
       .legalFor({s8})
+      .narrowScalarIf(all(pred24Bit, typeIs(0, s48)), changeTo(0, s24))
       .customFor(LegalLibcallScalars)
       .clampScalar(0, s8, sMax);
 
@@ -173,8 +174,9 @@ Z80LegalizerInfo::Z80LegalizerInfo(const Z80Subtarget &STI,
       .minScalar(0, s16)
       .minScalarIf(pred24Bit, 0, s24)
       .minScalar(0, s32)
+      .minScalarIf(pred24Bit, 0, s48)
       .minScalar(0, s64)
-      .maxScalar(0, s64);
+      .maxScalar(0, s32);
 
   getActionDefinitionsBuilder({G_SDIV, G_UDIV, G_SREM, G_UREM})
       .libcallFor(LegalLibcallScalars)