[GlobalISel] Add support for DIV/REM.

llvm-svn: 279073

llvm/include/llvm/CodeGen/GlobalISel/IRTranslator.h

@@ -171,6 +171,20 @@ private:
   bool translateXor(const User &U) {
     return translateBinaryOp(TargetOpcode::G_XOR, U);
   }
+
+  bool translateUDiv(const User &U) {
+    return translateBinaryOp(TargetOpcode::G_UDIV, U);
+  }
+  bool translateSDiv(const User &U) {
+    return translateBinaryOp(TargetOpcode::G_SDIV, U);
+  }
+  bool translateURem(const User &U) {
+    return translateBinaryOp(TargetOpcode::G_UREM, U);
+  }
+  bool translateSRem(const User &U) {
+    return translateBinaryOp(TargetOpcode::G_SREM, U);
+  }
+
   bool translateAlloca(const User &U) {
     return translateStaticAlloca(cast<AllocaInst>(U));
   }
@@ -215,11 +229,7 @@ private:
   bool translateFAdd(const User &U) { return false; }
   bool translateFSub(const User &U) { return false; }
   bool translateFMul(const User &U) { return false; }
-  bool translateUDiv(const User &U) { return false; }
-  bool translateSDiv(const User &U) { return false; }
   bool translateFDiv(const User &U) { return false; }
-  bool translateURem(const User &U) { return false; }
-  bool translateSRem(const User &U) { return false; }
   bool translateFRem(const User &U) { return false; }
   bool translateGetElementPtr(const User &U) { return false; }
   bool translateFence(const User &U) { return false; }

llvm/include/llvm/Target/GenericOpcodes.td

@@ -107,6 +107,38 @@ def G_MUL : Instruction {
   let isCommutable = 1;
 }
 
+// Generic signed division.
+def G_SDIV : Instruction {
+  let OutOperandList = (outs unknown:$dst);
+  let InOperandList = (ins unknown:$src1, unknown:$src2);
+  let hasSideEffects = 0;
+  let isCommutable = 0;
+}
+
+// Generic unsigned division.
+def G_UDIV : Instruction {
+  let OutOperandList = (outs unknown:$dst);
+  let InOperandList = (ins unknown:$src1, unknown:$src2);
+  let hasSideEffects = 0;
+  let isCommutable = 0;
+}
+
+// Generic signed remainder.
+def G_SREM : Instruction {
+  let OutOperandList = (outs unknown:$dst);
+  let InOperandList = (ins unknown:$src1, unknown:$src2);
+  let hasSideEffects = 0;
+  let isCommutable = 0;
+}
+
+// Generic unsigned remainder.
+def G_UREM : Instruction {
+  let OutOperandList = (outs unknown:$dst);
+  let InOperandList = (ins unknown:$src1, unknown:$src2);
+  let hasSideEffects = 0;
+  let isCommutable = 0;
+}
+
 // Generic addition consuming and producing a carry flag.
 def G_ADDE : Instruction {
   let OutOperandList = (outs unknown:$dst, unknown:$carry_out);

llvm/include/llvm/Target/TargetOpcodes.def

@@ -173,6 +173,18 @@ HANDLE_TARGET_OPCODE(G_SUB)
 // Generic multiply instruction.
 HANDLE_TARGET_OPCODE(G_MUL)
 
+// Generic signed division instruction.
+HANDLE_TARGET_OPCODE(G_SDIV)
+
+// Generic unsigned division instruction.
+HANDLE_TARGET_OPCODE(G_UDIV)
+
+// Generic signed remainder instruction.
+HANDLE_TARGET_OPCODE(G_SREM)
+
+// Generic unsigned remainder instruction.
+HANDLE_TARGET_OPCODE(G_UREM)
+
 /// Generic bitwise and instruction.
 HANDLE_TARGET_OPCODE(G_AND)
 

llvm/test/CodeGen/AArch64/GlobalISel/arm64-irtranslator.ll

@@ -459,6 +459,50 @@ define i32 @test_ashr(i32 %arg1, i32 %arg2) {
   ret i32 %res
 }
 
+; CHECK-LABEL: name: test_sdiv
+; CHECK: [[ARG1:%[0-9]+]](32) = COPY %w0
+; CHECK-NEXT: [[ARG2:%[0-9]+]](32) = COPY %w1
+; CHECK-NEXT: [[RES:%[0-9]+]](32) = G_SDIV s32 [[ARG1]], [[ARG2]]
+; CHECK-NEXT: %w0 = COPY [[RES]]
+; CHECK-NEXT: RET_ReallyLR implicit %w0
+define i32 @test_sdiv(i32 %arg1, i32 %arg2) {
+  %res = sdiv i32 %arg1, %arg2
+  ret i32 %res
+}
+
+; CHECK-LABEL: name: test_udiv
+; CHECK: [[ARG1:%[0-9]+]](32) = COPY %w0
+; CHECK-NEXT: [[ARG2:%[0-9]+]](32) = COPY %w1
+; CHECK-NEXT: [[RES:%[0-9]+]](32) = G_UDIV s32 [[ARG1]], [[ARG2]]
+; CHECK-NEXT: %w0 = COPY [[RES]]
+; CHECK-NEXT: RET_ReallyLR implicit %w0
+define i32 @test_udiv(i32 %arg1, i32 %arg2) {
+  %res = udiv i32 %arg1, %arg2
+  ret i32 %res
+}
+
+; CHECK-LABEL: name: test_srem
+; CHECK: [[ARG1:%[0-9]+]](32) = COPY %w0
+; CHECK-NEXT: [[ARG2:%[0-9]+]](32) = COPY %w1
+; CHECK-NEXT: [[RES:%[0-9]+]](32) = G_SREM s32 [[ARG1]], [[ARG2]]
+; CHECK-NEXT: %w0 = COPY [[RES]]
+; CHECK-NEXT: RET_ReallyLR implicit %w0
+define i32 @test_srem(i32 %arg1, i32 %arg2) {
+  %res = srem i32 %arg1, %arg2
+  ret i32 %res
+}
+
+; CHECK-LABEL: name: test_urem
+; CHECK: [[ARG1:%[0-9]+]](32) = COPY %w0
+; CHECK-NEXT: [[ARG2:%[0-9]+]](32) = COPY %w1
+; CHECK-NEXT: [[RES:%[0-9]+]](32) = G_UREM s32 [[ARG1]], [[ARG2]]
+; CHECK-NEXT: %w0 = COPY [[RES]]
+; CHECK-NEXT: RET_ReallyLR implicit %w0
+define i32 @test_urem(i32 %arg1, i32 %arg2) {
+  %res = urem i32 %arg1, %arg2
+  ret i32 %res
+}
+
 ; CHECK-LABEL: name: test_constant_null
 ; CHECK: [[NULL:%[0-9]+]](64) = G_CONSTANT p0 0
 ; CHECK: %x0 = COPY [[NULL]]