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* [glibc] LoongArch: Use __builtin_logb{,f} with GCC >= 13
@ 2022-11-29  8:01 Yinyu Cai
  0 siblings, 0 replies; only message in thread
From: Yinyu Cai @ 2022-11-29  8:01 UTC (permalink / raw)
  To: glibc-cvs

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=13c549f49705d10105b16706124077e07068a936

commit 13c549f49705d10105b16706124077e07068a936
Author: Xiaolin Tang <tangxiaolin@loongson.cn>
Date:   Wed Nov 23 11:45:01 2022 +0800

    LoongArch: Use __builtin_logb{,f} with GCC >= 13
    
    GCC 13 compiles these built-ins instead of generic
    implementation for function logb.
    
    Link: https://gcc.gnu.org/r13-3922
    Co-Authored-By: Xi Ruoyao <xry111@xry111.site>

Diff:
---
 sysdeps/loongarch/fpu/math-use-builtins-logb.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/sysdeps/loongarch/fpu/math-use-builtins-logb.h b/sysdeps/loongarch/fpu/math-use-builtins-logb.h
new file mode 100644
index 0000000000..b1c3f30dc4
--- /dev/null
+++ b/sysdeps/loongarch/fpu/math-use-builtins-logb.h
@@ -0,0 +1,10 @@
+#if __GNUC_PREREQ (13, 0)
+# define USE_LOGB_BUILTIN 1
+# define USE_LOGBF_BUILTIN 1
+#else
+# define USE_LOGB_BUILTIN 0
+# define USE_LOGBF_BUILTIN 0
+#endif
+
+#define USE_LOGBL_BUILTIN 0
+#define USE_LOGBF128_BUILTIN 0

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