[llvm] [bazel] Port a454a3cdaf82dea7b6293d29628b70eaec918723 (PR #218289)

[Benjamin Kramer via llvm-commits]

https://github.com/d0k created https://github.com/llvm/llvm-project/pull/218289

None

>From 60ae8e7de4b0f671919233dd39b85c40fdb3bcb4 Mon Sep 17 00:00:00 2001
From: Benjamin Kramer <benny.kra at googlemail.com>
Date: Sun, 23 Aug 2026 23:01:57 +0200
Subject: [PATCH] [bazel] Port a454a3cdaf82dea7b6293d29628b70eaec918723

---
 .../llvm-project-overlay/libc/BUILD.bazel     | 63 ++++++++++++++++---
 1 file changed, 55 insertions(+), 8 deletions(-)

diff --git a/utils/bazel/llvm-project-overlay/libc/BUILD.bazel b/utils/bazel/llvm-project-overlay/libc/BUILD.bazel
index a3f3d3427f518..a60ea2393d9bf 100644
--- a/utils/bazel/llvm-project-overlay/libc/BUILD.bazel
+++ b/utils/bazel/llvm-project-overlay/libc/BUILD.bazel
@@ -1390,6 +1390,15 @@ libc_support_library(
     ],
 )
 
+libc_support_library(
+    name = "__support_frac64",
+    hdrs = ["src/__support/frac64.h"],
+    deps = [
+        ":__support_big_int",
+        ":__support_macros_config",
+    ],
+)
+
 libc_support_library(
     name = "__support_frac128",
     hdrs = ["src/__support/frac128.h"],
@@ -3705,6 +3714,11 @@ libc_support_library(
 
 ########################## externally shared targets ###########################
 
+libc_support_library(
+    name = "shared_libc_common",
+    hdrs = ["shared/libc_common.h"],
+)
+
 libc_header_library(
     name = "libcxx_shared_headers",
     hdrs = [
@@ -3724,18 +3738,13 @@ libc_header_library(
 # This target is only used by APFloat.cpp in the Support library.
 cc_library(
     name = "shared_math_headers_for_apfloat",
-    srcs = glob([
-        "src/__support/math/*.h",
-        "src/__support/math/check/*.h",
-    ]),
+    srcs = glob(["src/__support/math/**/*.h"]),
     hdrs = [
         "shared/libc_common.h",
         "shared/math.h",
         "shared/math_check_exceptions.h",
-    ] + glob([
-        "shared/math/*.h",
-        "shared/math/check/*.h",
-    ]),
+        "shared/static_rounding_math.h",
+    ] + glob(["shared/math/**/*.h"]),
     copts = libc_common_copts(),
     includes = ["."],
     deps = [
@@ -3767,6 +3776,7 @@ cc_library(
         ":__support_fputil_rounding_mode",
         ":__support_fputil_sqrt",
         ":__support_fputil_triple_double",
+        ":__support_frac64",
         ":__support_frac128",
         ":__support_integer_literals",
         ":__support_libc_errno",
@@ -7531,6 +7541,42 @@ libc_support_library(
     ],
 )
 
+libc_support_library(
+    name = "__support_math_check_exp_exceptions",
+    hdrs = ["src/__support/math/check/exp_exceptions.h"],
+    deps = [
+        ":__support_common",
+        ":__support_fputil_fp_bits",
+        ":__support_macros_config",
+        ":hdr_fenv_macros",
+    ],
+)
+
+libc_support_library(
+    name = "__support_math_expf_integer_eval",
+    hdrs = ["src/__support/math/expf_integer_eval.h"],
+    deps = [
+        ":__support_cpp_bit",
+        ":__support_fputil_fp_bits",
+        ":__support_fputil_polyeval",
+        ":__support_frac64",
+        ":__support_macros_config",
+        ":__support_macros_optimization",
+        ":__support_math_check_exp_exceptions",
+    ],
+)
+
+libc_support_library(
+    name = "__support_math_static_rounding_expf",
+    hdrs = ["shared/math/static_rounding/expf.h"],
+    deps = [
+        ":__support_common",
+        ":__support_macros_config",
+        ":__support_math_expf_integer_eval",
+        ":shared_libc_common",
+    ],
+)
+
 libc_support_library(
     name = "__support_math_expf",
     hdrs = ["src/__support/math/expf.h"],
@@ -11296,6 +11342,7 @@ libc_math_function(
     name = "expf",
     additional_deps = [
         ":__support_math_expf",
+        ":__support_math_static_rounding_expf",
         ":errno",
     ],
 )