[gcc r13-1152] arm: fix checking ICE in arm_print_operand [PR106004]

[gcc r13-1152] arm: fix checking ICE in arm_print_operand [PR106004]

[Richard Earnshaw]

https://gcc.gnu.org/g:040f8224617ad3924f606c8982da369f898693d1

commit r13-1152-g040f8224617ad3924f606c8982da369f898693d1
Author: Richard Earnshaw <rearnsha@arm.com>
Date:   Fri Jun 17 14:25:51 2022 +0100

    arm: fix checking ICE in arm_print_operand [PR106004]
    
    Sigh, another instance where I incorrectly used XUINT instead of
    UINTVAL.
    
    I've also made the code here a little more robust (although I think
    this case can't in fact be reached) if the 32-bit clear mask includes
    bit 31.  This case, if reached, would print out an out-of-range value
    based on the size of the compiler's HOST_WIDE_INT type due to
    sign-extension.  We avoid this by masking the value after inversion.
    
    gcc/ChangeLog:
            PR target/106004
            * config/arm/arm.cc (arm_print_operand, case 'V'): Use UINTVAL.
            Clear bits in the mask above bit 31.

Diff:
---
 gcc/config/arm/arm.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gcc/config/arm/arm.cc b/gcc/config/arm/arm.cc
index 2925907b436..33fb98d5cad 100644
--- a/gcc/config/arm/arm.cc
+++ b/gcc/config/arm/arm.cc
@@ -24199,7 +24199,8 @@ arm_print_operand (FILE *stream, rtx x, int code)
 	    return;
 	  }
 
-	unsigned HOST_WIDE_INT val = ~XUINT (x, 0);
+	unsigned HOST_WIDE_INT val
+	  = ~UINTVAL (x) & HOST_WIDE_INT_UC (0xffffffff);
 	int lsb = exact_log2 (val & -val);
 	asm_fprintf (stream, "#%d, #%d", lsb,
 		     (exact_log2 (val + (val & -val)) - lsb));