[PATCH] IBM Z: Fix address of operands will never be NULL warnings

[PATCH] IBM Z: Fix address of operands will never be NULL warnings

[Stefan Schulze Frielinghaus]

Since a recent enhancement of -Waddress a couple of warnings are emitted
and turned into errors during bootstrap:

gcc/config/s390/s390.md:12087:25: error: the address of 'operands' will never be NULL [-Werror=address]
12087 |   "TARGET_HTM && operands != NULL
build/gencondmd.c:59:12: note: 'operands' declared here
   59 | extern rtx operands[];
      |            ^~~~~~~~

Fixed by removing those non-null checks.
Bootstrapped and regtested on IBM Z.  Ok for mainline?

gcc/ChangeLog:

	* config/s390/s390.md ("*cc_to_int", "tabort", "*tabort_1",
	"*tabort_1_plus"): Remove operands non-null check.
---
 gcc/config/s390/s390.md | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/gcc/config/s390/s390.md b/gcc/config/s390/s390.md
index b8bdbaec468..4debdcd1247 100644
--- a/gcc/config/s390/s390.md
+++ b/gcc/config/s390/s390.md
@@ -3533,7 +3533,7 @@
   [(set (match_operand:SI 0 "nonimmediate_operand"     "=d")
         (unspec:SI [(match_operand 1 "register_operand" "0")]
                    UNSPEC_CC_TO_INT))]
-  "operands != NULL"
+  ""
   "#"
   "reload_completed"
   [(set (match_dup 0) (lshiftrt:SI (match_dup 0) (const_int 28)))])
@@ -12062,7 +12062,7 @@
 (define_expand "tabort"
   [(unspec_volatile [(match_operand:SI 0 "nonmemory_operand" "")]
 		    UNSPECV_TABORT)]
-  "TARGET_HTM && operands != NULL"
+  "TARGET_HTM"
 {
   if (CONST_INT_P (operands[0])
       && INTVAL (operands[0]) >= 0 && INTVAL (operands[0]) <= 255)
@@ -12076,7 +12076,7 @@
 (define_insn "*tabort_1"
   [(unspec_volatile [(match_operand:SI 0 "nonmemory_operand" "aJ")]
 		    UNSPECV_TABORT)]
-  "TARGET_HTM && operands != NULL"
+  "TARGET_HTM"
   "tabort\t%Y0"
   [(set_attr "op_type" "S")])
 
@@ -12084,8 +12084,7 @@
   [(unspec_volatile [(plus:SI (match_operand:SI 0 "register_operand"  "a")
 			      (match_operand:SI 1 "const_int_operand" "J"))]
 		    UNSPECV_TABORT)]
-  "TARGET_HTM && operands != NULL
-   && CONST_OK_FOR_CONSTRAINT_P (INTVAL (operands[1]), 'J', \"J\")"
+  "TARGET_HTM && CONST_OK_FOR_CONSTRAINT_P (INTVAL (operands[1]), 'J', \"J\")"
   "tabort\t%1(%0)"
   [(set_attr "op_type" "S")])
 
-- 
2.31.1

Re: [PATCH] IBM Z: Fix address of operands will never be NULL warnings

[Andreas Krebbel]

On 10/30/21 12:43, Stefan Schulze Frielinghaus wrote:
> Since a recent enhancement of -Waddress a couple of warnings are emitted
> and turned into errors during bootstrap:
> 
> gcc/config/s390/s390.md:12087:25: error: the address of 'operands' will never be NULL [-Werror=address]
> 12087 |   "TARGET_HTM && operands != NULL
> build/gencondmd.c:59:12: note: 'operands' declared here
>    59 | extern rtx operands[];
>       |            ^~~~~~~~
> 
> Fixed by removing those non-null checks.
> Bootstrapped and regtested on IBM Z.  Ok for mainline?
> 
> gcc/ChangeLog:
> 
> 	* config/s390/s390.md ("*cc_to_int", "tabort", "*tabort_1",
> 	"*tabort_1_plus"): Remove operands non-null check.

Ok. Thanks!

Andreas