[libc-commits] [libc] c7df883 - [libc] Use intermediate float operations on the GPU (#155869)

[via libc-commits]

Author: Joseph Huber
Date: 2025-08-28T13:03:55-05:00
New Revision: c7df8839d8f161883e5b4c3847c3470ab8e08e64

URL: https://github.com/llvm/llvm-project/commit/c7df8839d8f161883e5b4c3847c3470ab8e08e64
DIFF: https://github.com/llvm/llvm-project/commit/c7df8839d8f161883e5b4c3847c3470ab8e08e64.diff

LOG: [libc] Use intermediate float operations on the GPU (#155869)

Summary:
Move the GPU config to the common directory instead of copying it and
enable the intermediate float option in the math library.

Added: 
    libc/config/gpu/config.json

Modified: 
    

Removed: 
    libc/config/gpu/amdgpu/config.json
    libc/config/gpu/nvptx/config.json


################################################################################
diff  --git a/libc/config/gpu/amdgpu/config.json b/libc/config/gpu/config.json
similarity index 84%
rename from libc/config/gpu/amdgpu/config.json
rename to libc/config/gpu/config.json
index fa179b849dcf7..434ee042953eb 100644
--- a/libc/config/gpu/amdgpu/config.json
+++ b/libc/config/gpu/config.json
@@ -39,7 +39,7 @@
   },
   "math": {
     "LIBC_CONF_MATH_OPTIMIZATIONS": {
-      "value": "(LIBC_MATH_SKIP_ACCURATE_PASS | LIBC_MATH_SMALL_TABLES | LIBC_MATH_NO_ERRNO | LIBC_MATH_NO_EXCEPT)"
+      "value": "(LIBC_MATH_SKIP_ACCURATE_PASS | LIBC_MATH_INTERMEDIATE_COMP_IN_FLOAT | LIBC_MATH_SMALL_TABLES | LIBC_MATH_NO_ERRNO | LIBC_MATH_NO_EXCEPT)"
     }
   }
 }

diff  --git a/libc/config/gpu/nvptx/config.json b/libc/config/gpu/nvptx/config.json
deleted file mode 100644
index fa179b849dcf7..0000000000000
--- a/libc/config/gpu/nvptx/config.json
+++ /dev/null
@@ -1,45 +0,0 @@
-{
-  "errno": {
-    "LIBC_CONF_ERRNO_MODE": {
-      "value": "LIBC_ERRNO_MODE_SHARED"
-    }
-  },
-  "threads": {
-    "LIBC_CONF_THREAD_MODE": {
-      "value": "LIBC_THREAD_MODE_SINGLE"
-    }
-  },
-  "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
-    },
-    "LIBC_CONF_PRINTF_RUNTIME_DISPATCH": {
-      "value": false
-    }
-  },
-  "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)"
-    }
-  }
-}