[glibc] S390: Fix _FPU_SETCW/GETCW when compiling with Clang [BZ #30130]

[glibc] S390: Fix _FPU_SETCW/GETCW when compiling with Clang [BZ #30130]

[Stefan Liebler]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=3862773e1efba89ac7da43be80e64140b073c4e2

commit 3862773e1efba89ac7da43be80e64140b073c4e2
Author: Andreas Arnez <arnez@linux.ibm.com>
Date:   Tue Feb 28 13:48:06 2023 +0100

    S390: Fix _FPU_SETCW/GETCW when compiling with Clang [BZ #30130]
    
    The _FPU_SETCW and _FPU_GETCW macros are defined with inline assemblies.
    They use the sfpc and efpc instructions, respectively.  But both contain
    a spurious second operand that leads to a compile error with Clang.
    Removing this operand works both with gcc/gas (since binutils 2.18) as
    well as with clang/llvm.

Diff:
---
 sysdeps/s390/fpu/fpu_control.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sysdeps/s390/fpu/fpu_control.h b/sysdeps/s390/fpu/fpu_control.h
index e00d7775f4..567b180034 100644
--- a/sysdeps/s390/fpu/fpu_control.h
+++ b/sysdeps/s390/fpu/fpu_control.h
@@ -32,8 +32,8 @@
 typedef unsigned int fpu_control_t;
 
 /* Macros for accessing the hardware control word.  */
-#define _FPU_GETCW(cw)  __asm__ __volatile__ ("efpc %0,0" : "=d" (cw))
-#define _FPU_SETCW(cw)  __asm__ __volatile__ ("sfpc  %0,0" : : "d" (cw))
+#define _FPU_GETCW(cw)  __asm__ __volatile__ ("efpc %0" : "=d" (cw))
+#define _FPU_SETCW(cw)  __asm__ __volatile__ ("sfpc %0" : : "d" (cw))
 
 /* Default control word set at startup.  */
 extern fpu_control_t __fpu_control;