[libc][bazel] Add powf target and fix bazel overlay. (#71464)

Author: lntue

libc/src/math/generic/exp10f_impl.h

@@ -19,7 +19,6 @@
 #include "src/__support/FPUtil/rounding_mode.h"
 #include "src/__support/common.h"
 #include "src/__support/macros/optimization.h" // LIBC_UNLIKELY
-#include "src/math/exp10f.h"
 
 #include <errno.h>
 

utils/bazel/llvm-project-overlay/libc/BUILD.bazel

@@ -1331,17 +1331,6 @@ libc_math_function(
     ],
 )
 
-libc_math_function(
-    name = "powf",
-    additional_deps = [
-        ":__support_fputil_double_double",
-        ":__support_fputil_sqrt",
-        ":exp2f",
-        ":exp10f",
-        ":explogxf",
-    ],
-)
-
 libc_math_function(
     name = "logf",
     additional_deps = [
@@ -1573,6 +1562,24 @@ libc_math_function(
     ],
 )
 
+libc_math_function(
+    name = "powf",
+    additional_deps = [
+        ":__support_fputil_double_double",
+        ":__support_fputil_multiply_add",
+        ":__support_fputil_nearest_integer",
+        ":__support_fputil_polyeval",
+        ":__support_fputil_rounding_mode",
+        ":__support_fputil_sqrt",
+        ":__support_fputil_triple_double",
+        ":__support_macros_optimization",
+        ":common_constants",
+        ":explogxf",
+        ":exp2f_impl",
+        ":exp10f_impl",
+    ],
+)
+
 libc_math_function(name = "fabs")
 
 libc_math_function(name = "fabsf")

utils/bazel/llvm-project-overlay/libc/test/src/math/BUILD.bazel

@@ -760,6 +760,13 @@ math_test(
     ],
 )
 
+math_test(
+    name = "powf",
+    deps = [
+        "//libc/utils/MPFRWrapper:mpfr_wrapper",
+    ],
+)
+
 math_test(
     name = "fmod",
     hdrs = ["FModTest.h"],