R600/SI: Add intrinsics for brev instructions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211187 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/R600/AMDGPUISelLowering.cpp b/lib/Target/R600/AMDGPUISelLowering.cpp
index 1e6f38ffc3fd848f6827d6ea16b33ec9a16cb8a0..ac5d790878180ff4bb689ac7405b5abb2e05a85d 100644 (file)
--- a/lib/Target/R600/AMDGPUISelLowering.cpp
+++ b/lib/Target/R600/AMDGPUISelLowering.cpp
@@ -900,6 +900,9 @@ SDValue AMDGPUTargetLowering::LowerINTRINSIC_WO_CHAIN(SDValue Op,
                          Op.getOperand(1),
                          Op.getOperand(2));
 
+    case AMDGPUIntrinsic::AMDGPU_brev:
+      return DAG.getNode(AMDGPUISD::BREV, DL, VT, Op.getOperand(1));
+
     case AMDGPUIntrinsic::AMDIL_exp: // Legacy name.
       return DAG.getNode(ISD::FEXP2, DL, VT, Op.getOperand(1));
 
@@ -2026,6 +2029,7 @@ const char* AMDGPUTargetLowering::getTargetNodeName(unsigned Opcode) const {
   NODE_NAME_CASE(BFE_I32)
   NODE_NAME_CASE(BFI)
   NODE_NAME_CASE(BFM)
+  NODE_NAME_CASE(BREV)
   NODE_NAME_CASE(MUL_U24)
   NODE_NAME_CASE(MUL_I24)
   NODE_NAME_CASE(MAD_U24)

diff --git a/lib/Target/R600/AMDGPUISelLowering.h b/lib/Target/R600/AMDGPUISelLowering.h
index 34e36d886b9700228456631c36bcfee85d855718..5be3070f589b791d75defcdf55d540a214152922 100644 (file)
--- a/lib/Target/R600/AMDGPUISelLowering.h
+++ b/lib/Target/R600/AMDGPUISelLowering.h
@@ -188,6 +188,7 @@ enum {
   BFE_I32, // Extract range of bits with sign extension to 32-bits.
   BFI, // (src0 & src1) | (~src0 & src2)
   BFM, // Insert a range of bits into a 32-bit word.
+  BREV, // Reverse bits.
   MUL_U24,
   MUL_I24,
   MAD_U24,

diff --git a/lib/Target/R600/AMDGPUInstrInfo.td b/lib/Target/R600/AMDGPUInstrInfo.td
index 5cb2559dbb83cddc5ac4323f9c8272a532f2406f..942a9e8ff351e8735e9edd504b4ee14f067f7467 100644 (file)
--- a/lib/Target/R600/AMDGPUInstrInfo.td
+++ b/lib/Target/R600/AMDGPUInstrInfo.td
@@ -105,6 +105,8 @@ def AMDGPUbfe_i32 : SDNode<"AMDGPUISD::BFE_I32", AMDGPUDTIntTernaryOp>;
 def AMDGPUbfi : SDNode<"AMDGPUISD::BFI", AMDGPUDTIntTernaryOp>;
 def AMDGPUbfm : SDNode<"AMDGPUISD::BFM", SDTIntBinOp>;
 
+def AMDGPUbrev : SDNode<"AMDGPUISD::BREV", SDTIntUnaryOp>;
+
 // Signed and unsigned 24-bit mulitply.  The highest 8-bits are ignore when
 // performing the mulitply.  The result is a 32-bit value.
 def AMDGPUmul_u24 : SDNode<"AMDGPUISD::MUL_U24", SDTIntBinOp,

diff --git a/lib/Target/R600/AMDGPUIntrinsics.td b/lib/Target/R600/AMDGPUIntrinsics.td
index 4ef23abfe3ed6ecd2e2899a7a4f88908592d67cc..6dc7612d46fbc330d5f372247c31859cb164de0f 100644 (file)
--- a/lib/Target/R600/AMDGPUIntrinsics.td
+++ b/lib/Target/R600/AMDGPUIntrinsics.td
@@ -64,6 +64,7 @@ let TargetPrefix = "AMDGPU", isTarget = 1 in {
   def int_AMDGPU_bfe_i32 : Intrinsic<[llvm_i32_ty], [llvm_i32_ty, llvm_i32_ty, llvm_i32_ty], [IntrNoMem]>;
   def int_AMDGPU_bfe_u32 : Intrinsic<[llvm_i32_ty], [llvm_i32_ty, llvm_i32_ty, llvm_i32_ty], [IntrNoMem]>;
   def int_AMDGPU_bfm : Intrinsic<[llvm_i32_ty], [llvm_i32_ty, llvm_i32_ty], [IntrNoMem]>;
+  def int_AMDGPU_brev : Intrinsic<[llvm_i32_ty], [llvm_i32_ty], [IntrNoMem]>;
   def int_AMDGPU_barrier_local  : Intrinsic<[], [], []>;
   def int_AMDGPU_barrier_global  : Intrinsic<[], [], []>;
 }

diff --git a/lib/Target/R600/SIInstrInfo.cpp b/lib/Target/R600/SIInstrInfo.cpp
index e06dd1de3ec4830f7f80212f677ce6daaf437124..f5b82d53ba7a9d020fa3fdc4abdfdb3bfac7578c 100644 (file)
--- a/lib/Target/R600/SIInstrInfo.cpp
+++ b/lib/Target/R600/SIInstrInfo.cpp
@@ -664,6 +664,7 @@ unsigned SIInstrInfo::getVALUOp(const MachineInstr &MI) {
   case AMDGPU::S_SEXT_I32_I16: return AMDGPU::V_BFE_I32;
   case AMDGPU::S_BFE_U32: return AMDGPU::V_BFE_U32;
   case AMDGPU::S_BFE_I32: return AMDGPU::V_BFE_I32;
+  case AMDGPU::S_BREV_B32: return AMDGPU::V_BFREV_B32_e32;
   case AMDGPU::S_NOT_B32: return AMDGPU::V_NOT_B32_e32;
   case AMDGPU::S_NOT_B64: return AMDGPU::V_NOT_B32_e32;
   case AMDGPU::S_CMP_EQ_I32: return AMDGPU::V_CMP_EQ_I32_e32;

diff --git a/lib/Target/R600/SIInstructions.td b/lib/Target/R600/SIInstructions.td
index 61cd2be967dd032ebc40fb937189e23a404e6851..428e49c6431c6d765f52ed177b180d1817ea2856 100644 (file)
--- a/lib/Target/R600/SIInstructions.td
+++ b/lib/Target/R600/SIInstructions.td
@@ -101,7 +101,9 @@ def S_NOT_B64 : SOP1_64 <0x00000008, "S_NOT_B64",
 >;
 def S_WQM_B32 : SOP1_32 <0x00000009, "S_WQM_B32", []>;
 def S_WQM_B64 : SOP1_64 <0x0000000a, "S_WQM_B64", []>;
-def S_BREV_B32 : SOP1_32 <0x0000000b, "S_BREV_B32", []>;
+def S_BREV_B32 : SOP1_32 <0x0000000b, "S_BREV_B32",
+  [(set i32:$dst, (AMDGPUbrev i32:$src0))]
+>;
 def S_BREV_B64 : SOP1_64 <0x0000000c, "S_BREV_B64", []>;
 } // End neverHasSideEffects = 1
 

diff --git a/test/CodeGen/R600/llvm.AMDGPU.brev.ll b/test/CodeGen/R600/llvm.AMDGPU.brev.ll
new file mode 100644 (file)
index 0000000..68a5ad0
--- /dev/null
+++ b/test/CodeGen/R600/llvm.AMDGPU.brev.ll
@@ -0,0 +1,27 @@
+; RUN: llc -march=r600 -mcpu=SI -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
+
+declare i32 @llvm.AMDGPU.brev(i32) nounwind readnone
+
+; FUNC-LABEL: @s_brev_i32:
+; SI: S_LOAD_DWORD [[VAL:s[0-9]+]],
+; SI: S_BREV_B32 [[SRESULT:s[0-9]+]], [[VAL]]
+; SI: V_MOV_B32_e32 [[VRESULT:v[0-9]+]], [[SRESULT]]
+; SI: BUFFER_STORE_DWORD [[VRESULT]],
+; SI: S_ENDPGM
+define void @s_brev_i32(i32 addrspace(1)* noalias %out, i32 %val) nounwind {
+  %ctlz = call i32 @llvm.AMDGPU.brev(i32 %val) nounwind readnone
+  store i32 %ctlz, i32 addrspace(1)* %out, align 4
+  ret void
+}
+
+; FUNC-LABEL: @v_brev_i32:
+; SI: BUFFER_LOAD_DWORD [[VAL:v[0-9]+]],
+; SI: V_BFREV_B32_e32 [[RESULT:v[0-9]+]], [[VAL]]
+; SI: BUFFER_STORE_DWORD [[RESULT]],
+; SI: S_ENDPGM
+define void @v_brev_i32(i32 addrspace(1)* noalias %out, i32 addrspace(1)* noalias %valptr) nounwind {
+  %val = load i32 addrspace(1)* %valptr, align 4
+  %ctlz = call i32 @llvm.AMDGPU.brev(i32 %val) nounwind readnone
+  store i32 %ctlz, i32 addrspace(1)* %out, align 4
+  ret void
+}