[libc] Enable 'strftime' for the GPU targets

[jhuber6]

Summary:
These should allow us to build with locale support for libcxx.

[llvmbot]

@llvm/pr-subscribers-backend-amdgpu

@llvm/pr-subscribers-libc

Author: Joseph Huber (jhuber6)

Changes

Summary:
These should allow us to build with locale support for libcxx.

---

Full diff: https://github.com/llvm/llvm-project/pull/128220.diff

3 Files Affected:

• (modified) libc/config/gpu/amdgpu/entrypoints.txt (+2)
• (modified) libc/config/gpu/nvptx/entrypoints.txt (+2)
• (modified) libc/docs/gpu/support.rst (+2)

diff --git a/libc/config/gpu/amdgpu/entrypoints.txt b/libc/config/gpu/amdgpu/entrypoints.txt
index 756b2cdc7496e..291d86b4dd587 100644
--- a/libc/config/gpu/amdgpu/entrypoints.txt
+++ b/libc/config/gpu/amdgpu/entrypoints.txt
@@ -259,6 +259,8 @@ set(TARGET_LIBC_ENTRYPOINTS
     libc.src.time.clock_gettime
     libc.src.time.timespec_get
     libc.src.time.nanosleep
+    libc.src.time.strftime
+    libc.src.time.strftime_l
 
     # wchar.h entrypoints
     libc.src.wchar.wcslen
diff --git a/libc/config/gpu/nvptx/entrypoints.txt b/libc/config/gpu/nvptx/entrypoints.txt
index 6b25dae158cc9..1ea0d9b03b37e 100644
--- a/libc/config/gpu/nvptx/entrypoints.txt
+++ b/libc/config/gpu/nvptx/entrypoints.txt
@@ -259,6 +259,8 @@ set(TARGET_LIBC_ENTRYPOINTS
     libc.src.time.clock_gettime
     libc.src.time.timespec_get
     libc.src.time.nanosleep
+    libc.src.time.strftime
+    libc.src.time.strftime_l
 
     # wchar.h entrypoints
     libc.src.wchar.wcslen
diff --git a/libc/docs/gpu/support.rst b/libc/docs/gpu/support.rst
index 9c151a5fbac1f..3fb2df8e6f2ca 100644
--- a/libc/docs/gpu/support.rst
+++ b/libc/docs/gpu/support.rst
@@ -268,6 +268,8 @@ Function Name  Available  RPC Required
 clock          |check|
 clock_gettime  |check|
 nanosleep      |check|
+strftime       |check|
+strftime_l     |check|
 =============  =========  ============
 
 assert.h