From: Wilco Dijkstra <wilco.dijkstra@arm.com>
Date: Thu, 2 Jan 2025 19:46:07 +0000 (+0000)
Subject: AArch64: Simplify lrint
X-Git-Tag: glibc-2.42~445
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4c1137910683c12cf1edb31e511e11289cd1a9db;p=thirdparty%2Fglibc.git

AArch64: Simplify lrint

Simplify lrint.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
---

diff --git a/sysdeps/aarch64/fpu/s_lrint.c b/sysdeps/aarch64/fpu/s_lrint.c
index 904c42ccd9..66b3cca399 100644
--- a/sysdeps/aarch64/fpu/s_lrint.c
+++ b/sysdeps/aarch64/fpu/s_lrint.c
@@ -22,60 +22,9 @@
 #include <math-barriers.h>
 #include <libm-alias-double.h>
 
-# define IREG_SIZE 64
-
-# ifdef __ILP32__
-#  define OREG_SIZE 32
-# else
-#  define OREG_SIZE 64
-# endif
-
-# define IREGS "d"
-
-#if OREG_SIZE == 32
-# define OREGS "w"
-#else
-# define OREGS "x"
-#endif
-
-
 long int
 __lrint (double x)
 {
-
-#if IREG_SIZE == 64 && OREG_SIZE == 32
-  long int result;
-
-  if (__builtin_fabs (x) > INT32_MAX)
-    {
-      /* Converting large values to a 32 bit int may cause the frintx/fcvtza
-	 sequence to set both FE_INVALID and FE_INEXACT.  To avoid this
-	 check the rounding mode and do a single instruction with the
-	 appropriate rounding mode.  */
-
-      switch (get_rounding_mode ())
-	{
-	case FE_TONEAREST:
-	  asm volatile ("fcvtns" "\t%" OREGS "0, %" IREGS "1"
-			: "=r" (result) : "w" (x));
-	  break;
-	case FE_UPWARD:
-	  asm volatile ("fcvtps" "\t%" OREGS "0, %" IREGS "1"
-			: "=r" (result) : "w" (x));
-	  break;
-	case FE_DOWNWARD:
-	  asm volatile ("fcvtms" "\t%" OREGS "0, %" IREGS "1"
-			: "=r" (result) : "w" (x));
-	  break;
-	case FE_TOWARDZERO:
-	default:
-	  asm volatile ("fcvtzs" "\t%" OREGS "0, %" IREGS "1"
-			: "=r" (result) : "w" (x));
-	}
-      return result;
-    }
-#endif
-
   double r =  __builtin_rint (x);
 
   /* Prevent gcc from calling lrint directly when compiled with