[PATCH 06/11] aarch64: Fix up aarch64_print_operand xzr/wzr case

[Alex Coplan]

This adjusts aarch64_print_operand to recognize zero rtxes in modes other than
VOIDmode.  This allows us to use xzr/wzr for zero vectors, for example.

Bootstrapped/regtested as a series on aarch64-linux-gnu, OK for trunk?

gcc/ChangeLog:

        * config/aarch64/aarch64.cc (aarch64_print_operand): Handle
        non-VOIDmode CONST0_RTXes in {x,w}zr cases.
---
 gcc/config/aarch64/aarch64.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)


diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc
index 800a8b0e110..abd029887e5 100644
--- a/gcc/config/aarch64/aarch64.cc
+++ b/gcc/config/aarch64/aarch64.cc
@@ -12387,7 +12387,7 @@ aarch64_print_operand (FILE *f, rtx x, int code)
 
     case 'w':
     case 'x':
-      if (x == const0_rtx
+      if (x == CONST0_RTX (GET_MODE (x))
 	  || (CONST_DOUBLE_P (x) && aarch64_float_const_zero_rtx_p (x)))
 	{
 	  asm_fprintf (f, "%czr", code);