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Ugly example of building libc to spirv #128585

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2 changes: 2 additions & 0 deletions clang/lib/Basic/Targets/SPIR.h
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Original file line number Diff line number Diff line change
Expand Up @@ -399,6 +399,8 @@ class LLVM_LIBRARY_VISIBILITY SPIRV64AMDGCNTargetInfo final
HasLegalHalfType = true;
HasFloat16 = true;
HalfArgsAndReturns = true;

MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 64;
}

bool hasBFloat16Type() const override { return true; }
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4 changes: 4 additions & 0 deletions libc/cmake/modules/LLVMLibCArchitectures.cmake
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Expand Up @@ -49,6 +49,8 @@ function(get_arch_and_system_from_triple triple arch_var sys_var)
set(target_arch "riscv32")
elseif(target_arch MATCHES "^riscv64")
set(target_arch "riscv64")
elseif(target_arch MATCHES "^spirv64")
set(target_arch "spirv64")
elseif(target_arch MATCHES "^amdgcn")
set(target_arch "amdgpu")
elseif(target_arch MATCHES "^nvptx64")
Expand Down Expand Up @@ -160,6 +162,8 @@ elseif(LIBC_TARGET_ARCHITECTURE STREQUAL "riscv32")
set(LIBC_TARGET_ARCHITECTURE "riscv")
elseif(LIBC_TARGET_ARCHITECTURE STREQUAL "amdgpu")
set(LIBC_TARGET_ARCHITECTURE_IS_AMDGPU TRUE)
elseif(LIBC_TARGET_ARCHITECTURE STREQUAL "spirv64")
set(LIBC_TARGET_ARCHITECTURE_IS_SPIRV64 TRUE)
elseif(LIBC_TARGET_ARCHITECTURE STREQUAL "nvptx")
set(LIBC_TARGET_ARCHITECTURE_IS_NVPTX TRUE)
else()
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37 changes: 37 additions & 0 deletions libc/config/gpu/spirv64/config.json
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Original file line number Diff line number Diff line change
@@ -0,0 +1,37 @@
{
"errno": {
"LIBC_CONF_ERRNO_MODE": {
"value": "LIBC_ERRNO_MODE_SHARED"
}
},
"printf": {
"LIBC_CONF_PRINTF_DISABLE_FLOAT": {
"value": true
},
"LIBC_CONF_PRINTF_DISABLE_INDEX_MODE": {
"value": true
},
"LIBC_CONF_PRINTF_DISABLE_WRITE_INT": {
"value": true
},
"LIBC_CONF_PRINTF_FLOAT_TO_STR_USE_MEGA_LONG_DOUBLE_TABLE": {
"value": false
},
"LIBC_CONF_PRINTF_DISABLE_STRERROR": {
"value": true
}
},
"scanf": {
"LIBC_CONF_SCANF_DISABLE_FLOAT": {
"value": true
},
"LIBC_CONF_SCANF_DISABLE_INDEX_MODE": {
"value": true
}
},
"math": {
"LIBC_CONF_MATH_OPTIMIZATIONS": {
"value": "(LIBC_MATH_SKIP_ACCURATE_PASS | LIBC_MATH_SMALL_TABLES | LIBC_MATH_NO_ERRNO | LIBC_MATH_NO_EXCEPT)"
}
}
}
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