[llvm] r263791 - AMDGPU/SI: Add llvm.amdgcn.buffer.atomic.* intrinsics
Nicolai Haehnle via llvm-commits
llvm-commits at lists.llvm.org
Fri Mar 18 09:24:31 PDT 2016
Author: nha
Date: Fri Mar 18 11:24:31 2016
New Revision: 263791
URL: http://llvm.org/viewvc/llvm-project?rev=263791&view=rev
Log:
AMDGPU/SI: Add llvm.amdgcn.buffer.atomic.* intrinsics
Summary:
These intrinsics expose the BUFFER_ATOMIC_* instructions and will be used
by Mesa to implement atomics with buffer semantics. The intrinsic interface
matches that of buffer.load.format and buffer.store.format, except that the
GLC bit is not exposed (it is automatically deduced based on whether the
return value is used).
The change of hasSideEffects is required for TableGen to accept the pattern
that matches the intrinsic.
Reviewers: tstellarAMD, arsenm
Subscribers: arsenm, rivanvx, llvm-commits
Differential Revision: http://reviews.llvm.org/D18151
Added:
llvm/trunk/test/Analysis/DivergenceAnalysis/AMDGPU/llvm.amdgcn.buffer.atomic.ll
llvm/trunk/test/CodeGen/AMDGPU/llvm.amdgcn.buffer.atomic.ll
Modified:
llvm/trunk/include/llvm/IR/IntrinsicsAMDGPU.td
llvm/trunk/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp
llvm/trunk/lib/Target/AMDGPU/SIInstrInfo.td
llvm/trunk/lib/Target/AMDGPU/SIInstructions.td
Modified: llvm/trunk/include/llvm/IR/IntrinsicsAMDGPU.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/IR/IntrinsicsAMDGPU.td?rev=263791&r1=263790&r2=263791&view=diff
==============================================================================
--- llvm/trunk/include/llvm/IR/IntrinsicsAMDGPU.td (original)
+++ llvm/trunk/include/llvm/IR/IntrinsicsAMDGPU.td Fri Mar 18 11:24:31 2016
@@ -224,6 +224,34 @@ def int_amdgcn_buffer_store_format : Int
llvm_i1_ty], // slc(imm)
[]>;
+class AMDGPUBufferAtomic : Intrinsic <
+ [llvm_i32_ty],
+ [llvm_i32_ty, // vdata(VGPR)
+ llvm_v4i32_ty, // rsrc(SGPR)
+ llvm_i32_ty, // vindex(VGPR)
+ llvm_i32_ty, // offset(SGPR/VGPR/imm)
+ llvm_i1_ty], // slc(imm)
+ []>;
+def int_amdgcn_buffer_atomic_swap : AMDGPUBufferAtomic;
+def int_amdgcn_buffer_atomic_add : AMDGPUBufferAtomic;
+def int_amdgcn_buffer_atomic_sub : AMDGPUBufferAtomic;
+def int_amdgcn_buffer_atomic_smin : AMDGPUBufferAtomic;
+def int_amdgcn_buffer_atomic_umin : AMDGPUBufferAtomic;
+def int_amdgcn_buffer_atomic_smax : AMDGPUBufferAtomic;
+def int_amdgcn_buffer_atomic_umax : AMDGPUBufferAtomic;
+def int_amdgcn_buffer_atomic_and : AMDGPUBufferAtomic;
+def int_amdgcn_buffer_atomic_or : AMDGPUBufferAtomic;
+def int_amdgcn_buffer_atomic_xor : AMDGPUBufferAtomic;
+def int_amdgcn_buffer_atomic_cmpswap : Intrinsic<
+ [llvm_i32_ty],
+ [llvm_i32_ty, // src(VGPR)
+ llvm_i32_ty, // cmp(VGPR)
+ llvm_v4i32_ty, // rsrc(SGPR)
+ llvm_i32_ty, // vindex(VGPR)
+ llvm_i32_ty, // offset(SGPR/VGPR/imm)
+ llvm_i1_ty], // slc(imm)
+ []>;
+
def int_amdgcn_read_workdim : AMDGPUReadPreloadRegisterIntrinsic <
"__builtin_amdgcn_read_workdim">;
Modified: llvm/trunk/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp?rev=263791&r1=263790&r2=263791&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp (original)
+++ llvm/trunk/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp Fri Mar 18 11:24:31 2016
@@ -139,6 +139,17 @@ static bool isIntrinsicSourceOfDivergenc
case Intrinsic::amdgcn_image_atomic_inc:
case Intrinsic::amdgcn_image_atomic_dec:
case Intrinsic::amdgcn_image_atomic_cmpswap:
+ case Intrinsic::amdgcn_buffer_atomic_swap:
+ case Intrinsic::amdgcn_buffer_atomic_add:
+ case Intrinsic::amdgcn_buffer_atomic_sub:
+ case Intrinsic::amdgcn_buffer_atomic_smin:
+ case Intrinsic::amdgcn_buffer_atomic_umin:
+ case Intrinsic::amdgcn_buffer_atomic_smax:
+ case Intrinsic::amdgcn_buffer_atomic_umax:
+ case Intrinsic::amdgcn_buffer_atomic_and:
+ case Intrinsic::amdgcn_buffer_atomic_or:
+ case Intrinsic::amdgcn_buffer_atomic_xor:
+ case Intrinsic::amdgcn_buffer_atomic_cmpswap:
return true;
}
Modified: llvm/trunk/lib/Target/AMDGPU/SIInstrInfo.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AMDGPU/SIInstrInfo.td?rev=263791&r1=263790&r2=263791&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AMDGPU/SIInstrInfo.td (original)
+++ llvm/trunk/lib/Target/AMDGPU/SIInstrInfo.td Fri Mar 18 11:24:31 2016
@@ -2814,10 +2814,25 @@ multiclass MUBUFAtomicAddr64_m <mubuf op
// for VI appropriately.
}
+multiclass MUBUFAtomicOther_m <mubuf op, string opName, dag outs, dag ins,
+ string asm, list<dag> pattern, bit is_return> {
+
+ def "" : MUBUF_Pseudo <opName, outs, ins, pattern>,
+ AtomicNoRet<opName, is_return>;
+
+ let tfe = 0 in {
+ let addr64 = 0 in {
+ def _si : MUBUF_Real_si <op, opName, outs, ins, asm>;
+ }
+
+ def _vi : MUBUF_Real_vi <op, opName, outs, ins, asm>;
+ }
+}
+
multiclass MUBUF_Atomic <mubuf op, string name, RegisterClass rc,
ValueType vt, SDPatternOperator atomic> {
- let mayStore = 1, mayLoad = 1, hasPostISelHook = 1 in {
+ let mayStore = 1, mayLoad = 1, hasPostISelHook = 1, hasSideEffects = 1 in {
// No return variants
let glc = 0 in {
@@ -2835,6 +2850,34 @@ multiclass MUBUF_Atomic <mubuf op, strin
slc:$slc),
name#" $vdata, $srsrc, $soffset"#"$offset"#"$slc", [], 0
>;
+
+ let offen = 1, idxen = 0 in {
+ defm _OFFEN : MUBUFAtomicOther_m <
+ op, name#"_offen", (outs),
+ (ins rc:$vdata, VGPR_32:$vaddr, SReg_128:$srsrc, SCSrc_32:$soffset,
+ mbuf_offset:$offset, slc:$slc),
+ name#" $vdata, $vaddr, $srsrc, $soffset offen"#"$offset"#"$slc", [], 0
+ >;
+ }
+
+ let offen = 0, idxen = 1 in {
+ defm _IDXEN : MUBUFAtomicOther_m <
+ op, name#"_idxen", (outs),
+ (ins rc:$vdata, VGPR_32:$vaddr, SReg_128:$srsrc, SCSrc_32:$soffset,
+ mbuf_offset:$offset, slc:$slc),
+ name#" $vdata, $vaddr, $srsrc, $soffset idxen"#"$offset"#"$slc", [], 0
+ >;
+ }
+
+ let offen = 1, idxen = 1 in {
+ defm _BOTHEN : MUBUFAtomicOther_m <
+ op, name#"_bothen", (outs),
+ (ins rc:$vdata, VReg_64:$vaddr, SReg_128:$srsrc, SCSrc_32:$soffset,
+ mbuf_offset:$offset, slc:$slc),
+ name#" $vdata, $vaddr, $srsrc, $soffset idxen offen"#"$offset"#"$slc",
+ [], 0
+ >;
+ }
} // glc = 0
// Variant that return values
@@ -2861,6 +2904,35 @@ multiclass MUBUF_Atomic <mubuf op, strin
i1:$slc), vt:$vdata_in))], 1
>;
+ let offen = 1, idxen = 0 in {
+ defm _RTN_OFFEN : MUBUFAtomicOther_m <
+ op, name#"_rtn_offen", (outs rc:$vdata),
+ (ins rc:$vdata_in, VGPR_32:$vaddr, SReg_128:$srsrc, SCSrc_32:$soffset,
+ mbuf_offset:$offset, slc:$slc),
+ name#" $vdata, $vaddr, $srsrc, $soffset offen"#"$offset"#" glc"#"$slc",
+ [], 1
+ >;
+ }
+
+ let offen = 0, idxen = 1 in {
+ defm _RTN_IDXEN : MUBUFAtomicOther_m <
+ op, name#"_rtn_idxen", (outs rc:$vdata),
+ (ins rc:$vdata_in, VGPR_32:$vaddr, SReg_128:$srsrc, SCSrc_32:$soffset,
+ mbuf_offset:$offset, slc:$slc),
+ name#" $vdata, $vaddr, $srsrc, $soffset idxen"#"$offset"#" glc"#"$slc",
+ [], 1
+ >;
+ }
+
+ let offen = 1, idxen = 1 in {
+ defm _RTN_BOTHEN : MUBUFAtomicOther_m <
+ op, name#"_rtn_bothen", (outs rc:$vdata),
+ (ins rc:$vdata_in, VReg_64:$vaddr, SReg_128:$srsrc, SCSrc_32:$soffset,
+ mbuf_offset:$offset, slc:$slc),
+ name#" $vdata, $vaddr, $srsrc, $soffset idxen offen"#"$offset"#" glc"#"$slc",
+ [], 1
+ >;
+ }
} // glc = 1
} // mayStore = 1, mayLoad = 1, hasPostISelHook = 1
Modified: llvm/trunk/lib/Target/AMDGPU/SIInstructions.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AMDGPU/SIInstructions.td?rev=263791&r1=263790&r2=263791&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AMDGPU/SIInstructions.td (original)
+++ llvm/trunk/lib/Target/AMDGPU/SIInstructions.td Fri Mar 18 11:24:31 2016
@@ -1011,7 +1011,9 @@ defm BUFFER_STORE_DWORDX4 : MUBUF_Store_
defm BUFFER_ATOMIC_SWAP : MUBUF_Atomic <
mubuf<0x30, 0x40>, "buffer_atomic_swap", VGPR_32, i32, atomic_swap_global
>;
-//def BUFFER_ATOMIC_CMPSWAP : MUBUF_ <mubuf<0x31, 0x41>, "buffer_atomic_cmpswap", []>;
+defm BUFFER_ATOMIC_CMPSWAP : MUBUF_Atomic <
+ mubuf<0x31, 0x41>, "buffer_atomic_cmpswap", VReg_64, v2i32, null_frag
+>;
defm BUFFER_ATOMIC_ADD : MUBUF_Atomic <
mubuf<0x32, 0x42>, "buffer_atomic_add", VGPR_32, i32, atomic_add_global
>;
@@ -2188,6 +2190,106 @@ def : Pat<
>;
//===----------------------------------------------------------------------===//
+// buffer_atomic patterns
+//===----------------------------------------------------------------------===//
+multiclass BufferAtomicPatterns<SDPatternOperator name, string opcode> {
+ def : Pat<
+ (name i32:$vdata_in, v4i32:$rsrc, 0,
+ (MUBUFIntrinsicOffset i32:$soffset, i16:$offset),
+ imm:$slc),
+ (!cast<MUBUF>(opcode # _RTN_OFFSET) $vdata_in, $rsrc, $soffset,
+ (as_i16imm $offset), (as_i1imm $slc))
+ >;
+
+ def : Pat<
+ (name i32:$vdata_in, v4i32:$rsrc, i32:$vindex,
+ (MUBUFIntrinsicOffset i32:$soffset, i16:$offset),
+ imm:$slc),
+ (!cast<MUBUF>(opcode # _RTN_IDXEN) $vdata_in, $vindex, $rsrc, $soffset,
+ (as_i16imm $offset), (as_i1imm $slc))
+ >;
+
+ def : Pat<
+ (name i32:$vdata_in, v4i32:$rsrc, 0,
+ (MUBUFIntrinsicVOffset i32:$soffset, i16:$offset, i32:$voffset),
+ imm:$slc),
+ (!cast<MUBUF>(opcode # _RTN_OFFEN) $vdata_in, $voffset, $rsrc, $soffset,
+ (as_i16imm $offset), (as_i1imm $slc))
+ >;
+
+ def : Pat<
+ (name i32:$vdata_in, v4i32:$rsrc, i32:$vindex,
+ (MUBUFIntrinsicVOffset i32:$soffset, i16:$offset, i32:$voffset),
+ imm:$slc),
+ (!cast<MUBUF>(opcode # _RTN_BOTHEN)
+ $vdata_in,
+ (REG_SEQUENCE VReg_64, $vindex, sub0, $voffset, sub1),
+ $rsrc, $soffset, (as_i16imm $offset), (as_i1imm $slc))
+ >;
+}
+
+defm : BufferAtomicPatterns<int_amdgcn_buffer_atomic_swap, "BUFFER_ATOMIC_SWAP">;
+defm : BufferAtomicPatterns<int_amdgcn_buffer_atomic_add, "BUFFER_ATOMIC_ADD">;
+defm : BufferAtomicPatterns<int_amdgcn_buffer_atomic_sub, "BUFFER_ATOMIC_SUB">;
+defm : BufferAtomicPatterns<int_amdgcn_buffer_atomic_smin, "BUFFER_ATOMIC_SMIN">;
+defm : BufferAtomicPatterns<int_amdgcn_buffer_atomic_umin, "BUFFER_ATOMIC_UMIN">;
+defm : BufferAtomicPatterns<int_amdgcn_buffer_atomic_smax, "BUFFER_ATOMIC_SMAX">;
+defm : BufferAtomicPatterns<int_amdgcn_buffer_atomic_umax, "BUFFER_ATOMIC_UMAX">;
+defm : BufferAtomicPatterns<int_amdgcn_buffer_atomic_and, "BUFFER_ATOMIC_AND">;
+defm : BufferAtomicPatterns<int_amdgcn_buffer_atomic_or, "BUFFER_ATOMIC_OR">;
+defm : BufferAtomicPatterns<int_amdgcn_buffer_atomic_xor, "BUFFER_ATOMIC_XOR">;
+
+def : Pat<
+ (int_amdgcn_buffer_atomic_cmpswap
+ i32:$data, i32:$cmp, v4i32:$rsrc, 0,
+ (MUBUFIntrinsicOffset i32:$soffset, i16:$offset),
+ imm:$slc),
+ (EXTRACT_SUBREG
+ (BUFFER_ATOMIC_CMPSWAP_RTN_OFFSET
+ (REG_SEQUENCE VReg_64, $data, sub0, $cmp, sub1),
+ $rsrc, $soffset, (as_i16imm $offset), (as_i1imm $slc)),
+ sub0)
+>;
+
+def : Pat<
+ (int_amdgcn_buffer_atomic_cmpswap
+ i32:$data, i32:$cmp, v4i32:$rsrc, i32:$vindex,
+ (MUBUFIntrinsicOffset i32:$soffset, i16:$offset),
+ imm:$slc),
+ (EXTRACT_SUBREG
+ (BUFFER_ATOMIC_CMPSWAP_RTN_IDXEN
+ (REG_SEQUENCE VReg_64, $data, sub0, $cmp, sub1),
+ $vindex, $rsrc, $soffset, (as_i16imm $offset), (as_i1imm $slc)),
+ sub0)
+>;
+
+def : Pat<
+ (int_amdgcn_buffer_atomic_cmpswap
+ i32:$data, i32:$cmp, v4i32:$rsrc, 0,
+ (MUBUFIntrinsicVOffset i32:$soffset, i16:$offset, i32:$voffset),
+ imm:$slc),
+ (EXTRACT_SUBREG
+ (BUFFER_ATOMIC_CMPSWAP_RTN_OFFEN
+ (REG_SEQUENCE VReg_64, $data, sub0, $cmp, sub1),
+ $voffset, $rsrc, $soffset, (as_i16imm $offset), (as_i1imm $slc)),
+ sub0)
+>;
+
+def : Pat<
+ (int_amdgcn_buffer_atomic_cmpswap
+ i32:$data, i32:$cmp, v4i32:$rsrc, i32:$vindex,
+ (MUBUFIntrinsicVOffset i32:$soffset, i16:$offset, i32:$voffset),
+ imm:$slc),
+ (EXTRACT_SUBREG
+ (BUFFER_ATOMIC_CMPSWAP_RTN_BOTHEN
+ (REG_SEQUENCE VReg_64, $data, sub0, $cmp, sub1),
+ (REG_SEQUENCE VReg_64, $vindex, sub0, $voffset, sub1),
+ $rsrc, $soffset, (as_i16imm $offset), (as_i1imm $slc)),
+ sub0)
+>;
+
+
+//===----------------------------------------------------------------------===//
// S_GETREG_B32 Intrinsic Pattern.
//===----------------------------------------------------------------------===//
def : Pat <
Added: llvm/trunk/test/Analysis/DivergenceAnalysis/AMDGPU/llvm.amdgcn.buffer.atomic.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Analysis/DivergenceAnalysis/AMDGPU/llvm.amdgcn.buffer.atomic.ll?rev=263791&view=auto
==============================================================================
--- llvm/trunk/test/Analysis/DivergenceAnalysis/AMDGPU/llvm.amdgcn.buffer.atomic.ll (added)
+++ llvm/trunk/test/Analysis/DivergenceAnalysis/AMDGPU/llvm.amdgcn.buffer.atomic.ll Fri Mar 18 11:24:31 2016
@@ -0,0 +1,104 @@
+;RUN: opt -mtriple=amdgcn-mesa-mesa3d -analyze -divergence %s | FileCheck %s
+
+;CHECK: DIVERGENT: %orig = call i32 @llvm.amdgcn.buffer.atomic.swap(
+define float @buffer_atomic_swap(<4 x i32> inreg %rsrc, i32 inreg %data) #0 {
+main_body:
+ %orig = call i32 @llvm.amdgcn.buffer.atomic.swap(i32 %data, <4 x i32> %rsrc, i32 0, i32 0, i1 0)
+ %r = bitcast i32 %orig to float
+ ret float %r
+}
+
+;CHECK: DIVERGENT: %orig = call i32 @llvm.amdgcn.buffer.atomic.add(
+define float @buffer_atomic_add(<4 x i32> inreg %rsrc, i32 inreg %data) #0 {
+main_body:
+ %orig = call i32 @llvm.amdgcn.buffer.atomic.add(i32 %data, <4 x i32> %rsrc, i32 0, i32 0, i1 0)
+ %r = bitcast i32 %orig to float
+ ret float %r
+}
+
+;CHECK: DIVERGENT: %orig = call i32 @llvm.amdgcn.buffer.atomic.sub(
+define float @buffer_atomic_sub(<4 x i32> inreg %rsrc, i32 inreg %data) #0 {
+main_body:
+ %orig = call i32 @llvm.amdgcn.buffer.atomic.sub(i32 %data, <4 x i32> %rsrc, i32 0, i32 0, i1 0)
+ %r = bitcast i32 %orig to float
+ ret float %r
+}
+
+;CHECK: DIVERGENT: %orig = call i32 @llvm.amdgcn.buffer.atomic.smin(
+define float @buffer_atomic_smin(<4 x i32> inreg %rsrc, i32 inreg %data) #0 {
+main_body:
+ %orig = call i32 @llvm.amdgcn.buffer.atomic.smin(i32 %data, <4 x i32> %rsrc, i32 0, i32 0, i1 0)
+ %r = bitcast i32 %orig to float
+ ret float %r
+}
+
+;CHECK: DIVERGENT: %orig = call i32 @llvm.amdgcn.buffer.atomic.umin(
+define float @buffer_atomic_umin(<4 x i32> inreg %rsrc, i32 inreg %data) #0 {
+main_body:
+ %orig = call i32 @llvm.amdgcn.buffer.atomic.umin(i32 %data, <4 x i32> %rsrc, i32 0, i32 0, i1 0)
+ %r = bitcast i32 %orig to float
+ ret float %r
+}
+
+;CHECK: DIVERGENT: %orig = call i32 @llvm.amdgcn.buffer.atomic.smax(
+define float @buffer_atomic_smax(<4 x i32> inreg %rsrc, i32 inreg %data) #0 {
+main_body:
+ %orig = call i32 @llvm.amdgcn.buffer.atomic.smax(i32 %data, <4 x i32> %rsrc, i32 0, i32 0, i1 0)
+ %r = bitcast i32 %orig to float
+ ret float %r
+}
+
+;CHECK: DIVERGENT: %orig = call i32 @llvm.amdgcn.buffer.atomic.umax(
+define float @buffer_atomic_umax(<4 x i32> inreg %rsrc, i32 inreg %data) #0 {
+main_body:
+ %orig = call i32 @llvm.amdgcn.buffer.atomic.umax(i32 %data, <4 x i32> %rsrc, i32 0, i32 0, i1 0)
+ %r = bitcast i32 %orig to float
+ ret float %r
+}
+
+;CHECK: DIVERGENT: %orig = call i32 @llvm.amdgcn.buffer.atomic.and(
+define float @buffer_atomic_and(<4 x i32> inreg %rsrc, i32 inreg %data) #0 {
+main_body:
+ %orig = call i32 @llvm.amdgcn.buffer.atomic.and(i32 %data, <4 x i32> %rsrc, i32 0, i32 0, i1 0)
+ %r = bitcast i32 %orig to float
+ ret float %r
+}
+
+;CHECK: DIVERGENT: %orig = call i32 @llvm.amdgcn.buffer.atomic.or(
+define float @buffer_atomic_or(<4 x i32> inreg %rsrc, i32 inreg %data) #0 {
+main_body:
+ %orig = call i32 @llvm.amdgcn.buffer.atomic.or(i32 %data, <4 x i32> %rsrc, i32 0, i32 0, i1 0)
+ %r = bitcast i32 %orig to float
+ ret float %r
+}
+
+;CHECK: DIVERGENT: %orig = call i32 @llvm.amdgcn.buffer.atomic.xor(
+define float @buffer_atomic_xor(<4 x i32> inreg %rsrc, i32 inreg %data) #0 {
+main_body:
+ %orig = call i32 @llvm.amdgcn.buffer.atomic.xor(i32 %data, <4 x i32> %rsrc, i32 0, i32 0, i1 0)
+ %r = bitcast i32 %orig to float
+ ret float %r
+}
+
+;CHECK: DIVERGENT: %orig = call i32 @llvm.amdgcn.buffer.atomic.cmpswap(
+define float @buffer_atomic_cmpswap(<4 x i32> inreg %rsrc, i32 inreg %data, i32 inreg %cmp) #0 {
+main_body:
+ %orig = call i32 @llvm.amdgcn.buffer.atomic.cmpswap(i32 %data, i32 %cmp, <4 x i32> %rsrc, i32 0, i32 0, i1 0)
+ %r = bitcast i32 %orig to float
+ ret float %r
+}
+
+declare i32 @llvm.amdgcn.buffer.atomic.swap(i32, <4 x i32>, i32, i32, i1) #1
+declare i32 @llvm.amdgcn.buffer.atomic.add(i32, <4 x i32>, i32, i32, i1) #1
+declare i32 @llvm.amdgcn.buffer.atomic.sub(i32, <4 x i32>, i32, i32, i1) #1
+declare i32 @llvm.amdgcn.buffer.atomic.smin(i32, <4 x i32>, i32, i32, i1) #1
+declare i32 @llvm.amdgcn.buffer.atomic.umin(i32, <4 x i32>, i32, i32, i1) #1
+declare i32 @llvm.amdgcn.buffer.atomic.smax(i32, <4 x i32>, i32, i32, i1) #1
+declare i32 @llvm.amdgcn.buffer.atomic.umax(i32, <4 x i32>, i32, i32, i1) #1
+declare i32 @llvm.amdgcn.buffer.atomic.and(i32, <4 x i32>, i32, i32, i1) #1
+declare i32 @llvm.amdgcn.buffer.atomic.or(i32, <4 x i32>, i32, i32, i1) #1
+declare i32 @llvm.amdgcn.buffer.atomic.xor(i32, <4 x i32>, i32, i32, i1) #1
+declare i32 @llvm.amdgcn.buffer.atomic.cmpswap(i32, i32, <4 x i32>, i32, i32, i1) #1
+
+attributes #0 = { "ShaderType"="0" }
+attributes #1 = { nounwind }
Added: llvm/trunk/test/CodeGen/AMDGPU/llvm.amdgcn.buffer.atomic.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/AMDGPU/llvm.amdgcn.buffer.atomic.ll?rev=263791&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/AMDGPU/llvm.amdgcn.buffer.atomic.ll (added)
+++ llvm/trunk/test/CodeGen/AMDGPU/llvm.amdgcn.buffer.atomic.ll Fri Mar 18 11:24:31 2016
@@ -0,0 +1,116 @@
+;RUN: llc < %s -march=amdgcn -mcpu=verde -verify-machineinstrs | FileCheck %s
+;RUN: llc < %s -march=amdgcn -mcpu=tonga -verify-machineinstrs | FileCheck %s
+
+;CHECK-LABEL: {{^}}test1:
+;CHECK: buffer_atomic_swap v0, s[0:3], 0 glc
+;CHECK: s_waitcnt vmcnt(0)
+;CHECK: buffer_atomic_swap v0, v1, s[0:3], 0 idxen glc
+;CHECK: s_waitcnt vmcnt(0)
+;CHECK: buffer_atomic_swap v0, v2, s[0:3], 0 offen glc
+;CHECK: s_waitcnt vmcnt(0)
+;CHECK: buffer_atomic_swap v0, v[1:2], s[0:3], 0 idxen offen glc
+;CHECK: s_waitcnt vmcnt(0)
+;CHECK: buffer_atomic_swap v0, v2, s[0:3], 0 offen offset:42 glc
+;CHECK-DAG: s_waitcnt vmcnt(0)
+;CHECK-DAG: s_movk_i32 [[SOFS:s[0-9]+]], 0x1fff
+;CHECK: buffer_atomic_swap v0, s[0:3], [[SOFS]] offset:1 glc
+;CHECK: s_waitcnt vmcnt(0)
+;CHECK: buffer_atomic_swap v0, s[0:3], 0{{$}}
+define float @test1(<4 x i32> inreg %rsrc, i32 %data, i32 %vindex, i32 %voffset) #0 {
+main_body:
+ %o1 = call i32 @llvm.amdgcn.buffer.atomic.swap(i32 %data, <4 x i32> %rsrc, i32 0, i32 0, i1 0)
+ %o2 = call i32 @llvm.amdgcn.buffer.atomic.swap(i32 %o1, <4 x i32> %rsrc, i32 %vindex, i32 0, i1 0)
+ %o3 = call i32 @llvm.amdgcn.buffer.atomic.swap(i32 %o2, <4 x i32> %rsrc, i32 0, i32 %voffset, i1 0)
+ %o4 = call i32 @llvm.amdgcn.buffer.atomic.swap(i32 %o3, <4 x i32> %rsrc, i32 %vindex, i32 %voffset, i1 0)
+ %ofs.5 = add i32 %voffset, 42
+ %o5 = call i32 @llvm.amdgcn.buffer.atomic.swap(i32 %o4, <4 x i32> %rsrc, i32 0, i32 %ofs.5, i1 0)
+ %o6 = call i32 @llvm.amdgcn.buffer.atomic.swap(i32 %o5, <4 x i32> %rsrc, i32 0, i32 8192, i1 0)
+ %unused = call i32 @llvm.amdgcn.buffer.atomic.swap(i32 %o6, <4 x i32> %rsrc, i32 0, i32 0, i1 0)
+ %out = bitcast i32 %o6 to float
+ ret float %out
+}
+
+;CHECK-LABEL: {{^}}test2:
+;CHECK: buffer_atomic_add v0, v1, s[0:3], 0 idxen glc
+;CHECK: s_waitcnt vmcnt(0)
+;CHECK: buffer_atomic_sub v0, v1, s[0:3], 0 idxen glc
+;CHECK: s_waitcnt vmcnt(0)
+;CHECK: buffer_atomic_smin v0, v1, s[0:3], 0 idxen glc
+;CHECK: s_waitcnt vmcnt(0)
+;CHECK: buffer_atomic_umin v0, v1, s[0:3], 0 idxen glc
+;CHECK: s_waitcnt vmcnt(0)
+;CHECK: buffer_atomic_smax v0, v1, s[0:3], 0 idxen glc
+;CHECK: s_waitcnt vmcnt(0)
+;CHECK: buffer_atomic_umax v0, v1, s[0:3], 0 idxen glc
+;CHECK: s_waitcnt vmcnt(0)
+;CHECK: buffer_atomic_and v0, v1, s[0:3], 0 idxen glc
+;CHECK: s_waitcnt vmcnt(0)
+;CHECK: buffer_atomic_or v0, v1, s[0:3], 0 idxen glc
+;CHECK: s_waitcnt vmcnt(0)
+;CHECK: buffer_atomic_xor v0, v1, s[0:3], 0 idxen glc
+define float @test2(<4 x i32> inreg %rsrc, i32 %data, i32 %vindex) #0 {
+main_body:
+ %t1 = call i32 @llvm.amdgcn.buffer.atomic.add(i32 %data, <4 x i32> %rsrc, i32 %vindex, i32 0, i1 0)
+ %t2 = call i32 @llvm.amdgcn.buffer.atomic.sub(i32 %t1, <4 x i32> %rsrc, i32 %vindex, i32 0, i1 0)
+ %t3 = call i32 @llvm.amdgcn.buffer.atomic.smin(i32 %t2, <4 x i32> %rsrc, i32 %vindex, i32 0, i1 0)
+ %t4 = call i32 @llvm.amdgcn.buffer.atomic.umin(i32 %t3, <4 x i32> %rsrc, i32 %vindex, i32 0, i1 0)
+ %t5 = call i32 @llvm.amdgcn.buffer.atomic.smax(i32 %t4, <4 x i32> %rsrc, i32 %vindex, i32 0, i1 0)
+ %t6 = call i32 @llvm.amdgcn.buffer.atomic.umax(i32 %t5, <4 x i32> %rsrc, i32 %vindex, i32 0, i1 0)
+ %t7 = call i32 @llvm.amdgcn.buffer.atomic.and(i32 %t6, <4 x i32> %rsrc, i32 %vindex, i32 0, i1 0)
+ %t8 = call i32 @llvm.amdgcn.buffer.atomic.or(i32 %t7, <4 x i32> %rsrc, i32 %vindex, i32 0, i1 0)
+ %t9 = call i32 @llvm.amdgcn.buffer.atomic.xor(i32 %t8, <4 x i32> %rsrc, i32 %vindex, i32 0, i1 0)
+ %out = bitcast i32 %t9 to float
+ ret float %out
+}
+
+; Ideally, we would teach tablegen & friends that cmpswap only modifies the
+; first vgpr. Since we don't do that yet, the register allocator will have to
+; create copies which we don't bother to track here.
+;
+;CHECK-LABEL: {{^}}test3:
+;CHECK-DAG: s_movk_i32 [[SOFS:s[0-9]+]], 0x1fff
+;CHECK: buffer_atomic_cmpswap {{v\[[0-9]+:[0-9]+\]}}, s[0:3], 0 glc
+;CHECK: s_waitcnt vmcnt(0)
+;CHECK: buffer_atomic_cmpswap {{v\[[0-9]+:[0-9]+\]}}, v2, s[0:3], 0 idxen glc
+;CHECK: s_waitcnt vmcnt(0)
+;CHECK: buffer_atomic_cmpswap {{v\[[0-9]+:[0-9]+\]}}, v3, s[0:3], 0 offen glc
+;CHECK: s_waitcnt vmcnt(0)
+;CHECK: buffer_atomic_cmpswap {{v\[[0-9]+:[0-9]+\]}}, v[2:3], s[0:3], 0 idxen offen glc
+;CHECK: s_waitcnt vmcnt(0)
+;CHECK: buffer_atomic_cmpswap {{v\[[0-9]+:[0-9]+\]}}, v3, s[0:3], 0 offen offset:42 glc
+;CHECK-DAG: s_waitcnt vmcnt(0)
+;CHECK: buffer_atomic_cmpswap {{v\[[0-9]+:[0-9]+\]}}, s[0:3], [[SOFS]] offset:1 glc
+define float @test3(<4 x i32> inreg %rsrc, i32 %data, i32 %cmp, i32 %vindex, i32 %voffset) #0 {
+main_body:
+ %o1 = call i32 @llvm.amdgcn.buffer.atomic.cmpswap(i32 %data, i32 %cmp, <4 x i32> %rsrc, i32 0, i32 0, i1 0)
+ %o2 = call i32 @llvm.amdgcn.buffer.atomic.cmpswap(i32 %o1, i32 %cmp, <4 x i32> %rsrc, i32 %vindex, i32 0, i1 0)
+ %o3 = call i32 @llvm.amdgcn.buffer.atomic.cmpswap(i32 %o2, i32 %cmp, <4 x i32> %rsrc, i32 0, i32 %voffset, i1 0)
+ %o4 = call i32 @llvm.amdgcn.buffer.atomic.cmpswap(i32 %o3, i32 %cmp, <4 x i32> %rsrc, i32 %vindex, i32 %voffset, i1 0)
+ %ofs.5 = add i32 %voffset, 42
+ %o5 = call i32 @llvm.amdgcn.buffer.atomic.cmpswap(i32 %o4, i32 %cmp, <4 x i32> %rsrc, i32 0, i32 %ofs.5, i1 0)
+ %o6 = call i32 @llvm.amdgcn.buffer.atomic.cmpswap(i32 %o5, i32 %cmp, <4 x i32> %rsrc, i32 0, i32 8192, i1 0)
+
+; Detecting the no-return variant doesn't work right now because of how the
+; intrinsic is replaced by an instruction that feeds into an EXTRACT_SUBREG.
+; Since there probably isn't a reasonable use-case of cmpswap that discards
+; the return value, that seems okay.
+;
+; %unused = call i32 @llvm.amdgcn.buffer.atomic.cmpswap(i32 %o6, i32 %cmp, <4 x i32> %rsrc, i32 0, i32 0, i1 0)
+ %out = bitcast i32 %o6 to float
+ ret float %out
+}
+
+declare i32 @llvm.amdgcn.buffer.atomic.swap(i32, <4 x i32>, i32, i32, i1) #1
+declare i32 @llvm.amdgcn.buffer.atomic.add(i32, <4 x i32>, i32, i32, i1) #1
+declare i32 @llvm.amdgcn.buffer.atomic.sub(i32, <4 x i32>, i32, i32, i1) #1
+declare i32 @llvm.amdgcn.buffer.atomic.smin(i32, <4 x i32>, i32, i32, i1) #1
+declare i32 @llvm.amdgcn.buffer.atomic.umin(i32, <4 x i32>, i32, i32, i1) #1
+declare i32 @llvm.amdgcn.buffer.atomic.smax(i32, <4 x i32>, i32, i32, i1) #1
+declare i32 @llvm.amdgcn.buffer.atomic.umax(i32, <4 x i32>, i32, i32, i1) #1
+declare i32 @llvm.amdgcn.buffer.atomic.and(i32, <4 x i32>, i32, i32, i1) #1
+declare i32 @llvm.amdgcn.buffer.atomic.or(i32, <4 x i32>, i32, i32, i1) #1
+declare i32 @llvm.amdgcn.buffer.atomic.xor(i32, <4 x i32>, i32, i32, i1) #1
+declare i32 @llvm.amdgcn.buffer.atomic.cmpswap(i32, i32, <4 x i32>, i32, i32, i1) #1
+
+attributes #0 = { "ShaderType"="0" }
+attributes #1 = { nounwind }
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