vsx.md (vsx_xscvdpspn): Eliminate useless alternative constraint.

2017-09-26  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* config/rs6000/vsx.md (vsx_xscvdpspn): Eliminate useless
	alternative constraint.
	(vsx_xscvspdpn): Likewise.
	(vsx_xscvspdpn_scalar): Likewise.

From-SVN: r253213

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 75ca6dbdf277fe46bd51b8fb3920c0ab2bbed772..54acc7810f70e769ff6954cd17ad4e6e629aa482 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -16,6 +16,11 @@
        instruction instead of FRSP and XSCVDPSPN.
        * config/rs6000/vsx.md (vsx_xscvspdp_scalar2): Move insn so that
        it is adjacent to the other XSCVSPDP insns.
+       (vsx_xscvdpsp_scalar): Use "ww" constraint instead of "f" to allow
+       SFmode to be in traditional Altivec registers.
+       (vsx_xscvdpspn): Eliminate useless alternative constraint.
+       (vsx_xscvspdpn): Likewise.
+       (vsx_xscvspdpn_scalar): Likewise.
 
 2017-09-26  Martin Jambor  <mjambor@suse.cz>
 

diff --git a/gcc/config/rs6000/vsx.md b/gcc/config/rs6000/vsx.md
index 3c54d4a01cae316183721bd3fe9e22f2dda3247c..e21801abb46db69e6da39a541059de30ed79f7db 100644 (file)
--- a/gcc/config/rs6000/vsx.md
+++ b/gcc/config/rs6000/vsx.md
@@ -1803,7 +1803,7 @@
 ;; format of scalars is actually DF.
 (define_insn "vsx_xscvdpsp_scalar"
   [(set (match_operand:V4SF 0 "vsx_register_operand" "=wa")
-       (unspec:V4SF [(match_operand:SF 1 "vsx_register_operand" "f")]
+       (unspec:V4SF [(match_operand:SF 1 "vsx_register_operand" "ww")]
                     UNSPEC_VSX_CVSPDP))]
   "VECTOR_UNIT_VSX_P (V4SFmode)"
   "xscvdpsp %x0,%x1"
@@ -1811,24 +1811,24 @@
 
 ;; ISA 2.07 xscvdpspn/xscvspdpn that does not raise an error on signalling NaNs
 (define_insn "vsx_xscvdpspn"
-  [(set (match_operand:V4SF 0 "vsx_register_operand" "=ww,?ww")
-       (unspec:V4SF [(match_operand:DF 1 "vsx_register_operand" "wd,wa")]
+  [(set (match_operand:V4SF 0 "vsx_register_operand" "=ww")
+       (unspec:V4SF [(match_operand:DF 1 "vsx_register_operand" "ws")]
                     UNSPEC_VSX_CVDPSPN))]
   "TARGET_XSCVDPSPN"
   "xscvdpspn %x0,%x1"
   [(set_attr "type" "fp")])
 
 (define_insn "vsx_xscvspdpn"
-  [(set (match_operand:DF 0 "vsx_register_operand" "=ws,?ws")
-       (unspec:DF [(match_operand:V4SF 1 "vsx_register_operand" "wf,wa")]
+  [(set (match_operand:DF 0 "vsx_register_operand" "=ws")
+       (unspec:DF [(match_operand:V4SF 1 "vsx_register_operand" "wa")]
                   UNSPEC_VSX_CVSPDPN))]
   "TARGET_XSCVSPDPN"
   "xscvspdpn %x0,%x1"
   [(set_attr "type" "fp")])
 
 (define_insn "vsx_xscvdpspn_scalar"
-  [(set (match_operand:V4SF 0 "vsx_register_operand" "=wf,?wa")
-       (unspec:V4SF [(match_operand:SF 1 "vsx_register_operand" "ww,ww")]
+  [(set (match_operand:V4SF 0 "vsx_register_operand" "=wa")
+       (unspec:V4SF [(match_operand:SF 1 "vsx_register_operand" "ww")]
                     UNSPEC_VSX_CVDPSPN))]
   "TARGET_XSCVDPSPN"
   "xscvdpspn %x0,%x1"