From: Robert Khasanov <rob.khasanov@gmail.com>
Date: Thu, 21 Aug 2014 09:43:43 +0000 (+0000)
Subject: [x86] Added _addcarry_ and _subborrow_ intrinsics
X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=commitdiff_plain;h=fec1abaeab63bbb606fcfd80b4da7a1e19b0813a

[x86] Added _addcarry_ and _subborrow_ intrinsics


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216164 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/IR/IntrinsicsX86.td b/include/llvm/IR/IntrinsicsX86.td
index 5fe90400e3f..bb45b2c05df 100644
--- a/include/llvm/IR/IntrinsicsX86.td
+++ b/include/llvm/IR/IntrinsicsX86.td
@@ -2768,6 +2768,18 @@ let TargetPrefix = "x86" in {  // All intrinsics start with "llvm.x86.".
   def int_x86_addcarryx_u64: GCCBuiltin<"__builtin_ia32_addcarryx_u64">,
         Intrinsic<[llvm_i8_ty], [llvm_i8_ty, llvm_i64_ty, llvm_i64_ty,
                                  llvm_ptr_ty], [IntrReadWriteArgMem]>;
+  def int_x86_addcarry_u32: GCCBuiltin<"__builtin_ia32_addcarry_u32">,
+        Intrinsic<[llvm_i8_ty], [llvm_i8_ty, llvm_i32_ty, llvm_i32_ty,
+                                 llvm_ptr_ty], [IntrReadWriteArgMem]>;
+  def int_x86_addcarry_u64: GCCBuiltin<"__builtin_ia32_addcarry_u64">,
+        Intrinsic<[llvm_i8_ty], [llvm_i8_ty, llvm_i64_ty, llvm_i64_ty,
+                                 llvm_ptr_ty], [IntrReadWriteArgMem]>;
+  def int_x86_subborrow_u32: GCCBuiltin<"__builtin_ia32_subborrow_u32">,
+        Intrinsic<[llvm_i8_ty], [llvm_i8_ty, llvm_i32_ty, llvm_i32_ty,
+                                 llvm_ptr_ty], [IntrReadWriteArgMem]>;
+  def int_x86_subborrow_u64: GCCBuiltin<"__builtin_ia32_subborrow_u64">,
+        Intrinsic<[llvm_i8_ty], [llvm_i8_ty, llvm_i64_ty, llvm_i64_ty,
+                                 llvm_ptr_ty], [IntrReadWriteArgMem]>;
 }
 
 //===----------------------------------------------------------------------===//
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 81949942ddc..b2f2562f25a 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -15455,6 +15455,14 @@ static void InitIntinsicsMap() {
                                 IntrinsicData(ADX,    X86ISD::ADC, 0)));
   IntrMap.insert(std::make_pair(Intrinsic::x86_addcarryx_u64,
                                 IntrinsicData(ADX,    X86ISD::ADC, 0)));
+  IntrMap.insert(std::make_pair(Intrinsic::x86_addcarry_u32,
+                                IntrinsicData(ADX,    X86ISD::ADC, 0)));
+  IntrMap.insert(std::make_pair(Intrinsic::x86_addcarry_u64,
+                                IntrinsicData(ADX,    X86ISD::ADC, 0)));
+  IntrMap.insert(std::make_pair(Intrinsic::x86_subborrow_u32,
+                                IntrinsicData(ADX,    X86ISD::SBB, 0)));
+  IntrMap.insert(std::make_pair(Intrinsic::x86_subborrow_u64,
+                                IntrinsicData(ADX,    X86ISD::SBB, 0)));
   Initialized = true;
 }
 
@@ -15547,7 +15555,7 @@ static SDValue LowerINTRINSIC_W_CHAIN(SDValue Op, const X86Subtarget *Subtarget,
     return DAG.getNode(ISD::MERGE_VALUES, dl, Op->getVTList(),
                        Ret, SDValue(InTrans.getNode(), 1));
   }
-  // ADC/ADCX
+  // ADC/ADCX/SBB
   case ADX: {
     SmallVector<SDValue, 2> Results;
     SDVTList CFVTs = DAG.getVTList(Op->getValueType(0), MVT::Other);
diff --git a/test/CodeGen/X86/adx-intrinsics.ll b/test/CodeGen/X86/adx-intrinsics.ll
index 2711055a046..0498177a9c1 100644
--- a/test/CodeGen/X86/adx-intrinsics.ll
+++ b/test/CodeGen/X86/adx-intrinsics.ll
@@ -1,3 +1,4 @@
+; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=corei7 --show-mc-encoding| FileCheck %s --check-prefix=NOADX --check-prefix=CHECK
 ; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=broadwell --show-mc-encoding| FileCheck %s --check-prefix=ADX --check-prefix=CHECK
 
 declare i8 @llvm.x86.addcarryx.u32(i8, i32, i32, i8*)
@@ -24,3 +25,53 @@ define i8 @test_addcarryx_u64(i8 %c, i64 %a, i64 %b, i8* %ptr) {
   ret i8 %ret;
 }
 
+declare i8 @llvm.x86.addcarry.u32(i8, i32, i32, i8*)
+
+define i8 @test_addcarry_u32(i8 %c, i32 %a, i32 %b, i8* %ptr) {
+; CHECK-LABEL: test_addcarry_u32
+; CHECK: addb
+; ADX: adcxl
+; NOADX: adcl
+; CHECK: setb
+; CHECK: retq
+  %ret = tail call i8 @llvm.x86.addcarry.u32(i8 %c, i32 %a, i32 %b, i8* %ptr)
+  ret i8 %ret;
+}
+
+declare i8 @llvm.x86.addcarry.u64(i8, i64, i64, i8*)
+
+define i8 @test_addcarry_u64(i8 %c, i64 %a, i64 %b, i8* %ptr) {
+; CHECK-LABEL: test_addcarry_u64
+; CHECK: addb
+; ADX: adcxq
+; NOADX: adcq
+; CHECK: setb
+; CHECK: retq
+  %ret = tail call i8 @llvm.x86.addcarry.u64(i8 %c, i64 %a, i64 %b, i8* %ptr)
+  ret i8 %ret;
+}
+
+declare i8 @llvm.x86.subborrow.u32(i8, i32, i32, i8*)
+
+define i8 @test_subborrow_u32(i8 %c, i32 %a, i32 %b, i8* %ptr) {
+; CHECK-LABEL: test_subborrow_u32
+; CHECK: addb
+; CHECK: sbbl
+; CHECK: setb
+; CHECK: retq
+  %ret = tail call i8 @llvm.x86.subborrow.u32(i8 %c, i32 %a, i32 %b, i8* %ptr)
+  ret i8 %ret;
+}
+
+declare i8 @llvm.x86.subborrow.u64(i8, i64, i64, i8*)
+
+define i8 @test_subborrow_u64(i8 %c, i64 %a, i64 %b, i8* %ptr) {
+; CHECK-LABEL: test_subborrow_u64
+; CHECK: addb
+; CHECK: sbbq
+; CHECK: setb
+; CHECK: retq
+  %ret = tail call i8 @llvm.x86.subborrow.u64(i8 %c, i64 %a, i64 %b, i8* %ptr)
+  ret i8 %ret;
+}
+