From: Segher Boessenkool <segher@kernel.crashing.org>
Date: Wed, 27 Jan 2016 19:44:31 +0000 (+0100)
Subject: rs6000: Put back the 's' output modifier
X-Git-Tag: basepoints/gcc-7~1271
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ac22318350b43bf7a4d72ed620365652cf222e9e;p=thirdparty%2Fgcc.git

rs6000: Put back the 's' output modifier

It turns out the 's' output modifier is used in some glibc math code,
and is in an installed header even.  So let's put it back, it is much
less of a burden supporting it a bit longer than to deal with the fallout.
(It is also being fixed for glibc.)


	* config/rs6000/rs6000.c (print_operand): Rollback 's' removal.

From-SVN: r232900
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 76c7af2e6ef3..fecbc49c2edd 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2016-01-27  Segher Boessenkool  <segher@kernel.crashing.org>
+
+	* config/rs6000/rs6000.c (print_operand): Rollback 's' removal.
+
 2016-01-27  Jeff Law  <law@redhat.com>
 
 	PR tree-optimization/68398
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index 7b9201a80d46..e9e12f530206 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -19949,6 +19949,14 @@ print_operand (FILE *file, rtx x, int code)
 	fprintf (file, "%d", 128 >> (REGNO (x) - CR0_REGNO));
       return;
 
+    case 's':
+      /* Low 5 bits of 32 - value */
+      if (! INT_P (x))
+	output_operand_lossage ("invalid %%s value");
+      else
+	fprintf (file, HOST_WIDE_INT_PRINT_DEC, (32 - INTVAL (x)) & 31);
+      return;
+
     case 't':
       /* Like 'J' but get to the OVERFLOW/UNORDERED bit.  */
       gcc_assert (REG_P (x) && GET_MODE (x) == CCmode);