[libc-commits] [libc] [libc] Reduce binary size for baremetal targets (PR #121164)

[via libc-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-libc

Author: Prabhuk (Prabhuk)

<details>
<summary>Changes</summary>

For `math` functions we must choose size optimized implementations.
Removing framepointers will also help with binary size savings.


---
Full diff: https://github.com/llvm/llvm-project/pull/121164.diff


1 Files Affected:

- (modified) libc/config/baremetal/config.json (+10) 


``````````diff
diff --git a/libc/config/baremetal/config.json b/libc/config/baremetal/config.json
index dc4b0517d938df..85e80879d498e6 100644
--- a/libc/config/baremetal/config.json
+++ b/libc/config/baremetal/config.json
@@ -25,5 +25,15 @@
     "LIBC_CONF_QSORT_IMPL": {
       "value": "LIBC_QSORT_HEAP_SORT"
     }
+  },
+  "math": {
+    "LIBC_CONF_MATH_OPTIMIZATIONS": {
+      "value": "(LIBC_MATH_SKIP_ACCURATE_PASS | LIBC_MATH_SMALL_TABLES)"
+    }
+  },
+  "codegen": {
+    "LIBC_CONF_KEEP_FRAME_POINTER": {
+      "value": false
+    }
   }
 }

``````````

</details>


https://github.com/llvm/llvm-project/pull/121164