powerpc: Use faster means to access FPSCR when possible in some cases

[external/glibc.git] / ChangeLog

diff --git a/ChangeLog b/ChangeLog
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@@ -1,3 +1,21 @@
+2019-06-30  Paul A. Clarke  <pc@us.ibm.com>
+
+       * sysdeps/powerpc/bits/fenvinline.h (__fegetround): Use
+       __fegetround_ISA300() or __fegetround_ISA2() as appropriate.
+       (__fegetround_ISA300) New.
+       (__fegetround_ISA2) New.
+       * sysdeps/powerpc/fpu_control.h (IS_ISA300): New.
+       (_FPU_MFFS): Move implementation...
+       (_FPU_GETCW): Here.
+       (_FPU_MFFSL): Move implementation....
+       (_FPU_GET_RC_ISA300): Here. New.
+       (_FPU_GET_RC): Use _FPU_GET_RC_ISA300() or _FPU_GETCW() as appropriate.
+       * sysdeps/powerpc/fpu/fenv_libc.h (fegetenv_status_ISA300): New.
+       (fegetenv_status): New.
+       * sysdeps/powerpc/fpu/fegetmode.c (fegetmode): Use fegetenv_status()
+       instead of fegetenv_register().
+       * sysdeps/powerpc/fpu/fegetexcept.c (__fegetexcept): Likewise.
+
 2019-06-28  Wilco Dijkstra  <wdijkstr@arm.com>
 
        * benchtests/bench-math-inlines.c: Increase iterations.