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R600/SI: Add intrinsics for brev instructions

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211187 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Matt Arsenault 2014-06-18 17:13:57 +00:00
parent 795ae8615f
commit 2b6e6fc1a8
7 changed files with 39 additions and 1 deletions
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4
lib/Target/R600/AMDGPUISelLowering.cpp
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@ -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)

1
lib/Target/R600/AMDGPUISelLowering.h
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@ -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,

2
lib/Target/R600/AMDGPUInstrInfo.td
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@ -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,

1
lib/Target/R600/AMDGPUIntrinsics.td
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@ -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<[], [], []>;
}

1
lib/Target/R600/SIInstrInfo.cpp
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@ -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;

4
lib/Target/R600/SIInstructions.td
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@ -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

27
test/CodeGen/R600/llvm.AMDGPU.brev.ll Normal file
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@ -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
}