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[NVPTX] Add a clang builtin for the warpsize intrinsic #110316

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Merged
merged 1 commit into from
Sep 27, 2024
Merged

[NVPTX] Add a clang builtin for the warpsize intrinsic #110316

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1 change: 1 addition & 0 deletions clang/include/clang/Basic/BuiltinsNVPTX.def
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Original file line number Diff line number Diff line change
Expand Up @@ -139,6 +139,7 @@ TARGET_BUILTIN(__nvvm_is_explicit_cluster, "b", "nc", AND(SM_90, PTX78))
BUILTIN(__nvvm_read_ptx_sreg_laneid, "i", "nc")
BUILTIN(__nvvm_read_ptx_sreg_warpid, "i", "nc")
BUILTIN(__nvvm_read_ptx_sreg_nwarpid, "i", "nc")
BUILTIN(__nvvm_read_ptx_sreg_warpsize, "i", "nc")

BUILTIN(__nvvm_read_ptx_sreg_smid, "i", "nc")
BUILTIN(__nvvm_read_ptx_sreg_nsmid, "i", "nc")
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4 changes: 3 additions & 1 deletion clang/test/CodeGen/builtins-nvptx.c
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Expand Up @@ -114,15 +114,17 @@ __device__ int read_ids() {
// CHECK: call i32 @llvm.nvvm.read.ptx.sreg.smid()
// CHECK: call i32 @llvm.nvvm.read.ptx.sreg.nsmid()
// CHECK: call i32 @llvm.nvvm.read.ptx.sreg.gridid()
// CHECK: call i32 @llvm.nvvm.read.ptx.sreg.warpsize()

int a = __nvvm_read_ptx_sreg_laneid();
int b = __nvvm_read_ptx_sreg_warpid();
int c = __nvvm_read_ptx_sreg_nwarpid();
int d = __nvvm_read_ptx_sreg_smid();
int e = __nvvm_read_ptx_sreg_nsmid();
int f = __nvvm_read_ptx_sreg_gridid();
int g = __nvvm_read_ptx_sreg_warpsize();

return a + b + c + d + e + f;
return a + b + c + d + e + f + g;

}

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