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| author | Richard Earnshaw <rearnsha@arm.com> | 2022-06-17 14:25:51 +0100 |
|---|---|---|
| committer | Richard Earnshaw <rearnsha@arm.com> | 2022-06-17 14:27:01 +0100 |
| commit | 040f8224617ad3924f606c8982da369f898693d1 (patch) | |
| tree | e878e63450d684959f71d8f71aecdd79ae76351b | |
| parent | 0f96ac43fa0a5fdbfce317b274233852d5b46d23 (diff) | |
| download | gcc-040f8224617ad3924f606c8982da369f898693d1.zip gcc-040f8224617ad3924f606c8982da369f898693d1.tar.gz gcc-040f8224617ad3924f606c8982da369f898693d1.tar.bz2 | |
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.
| -rw-r--r-- | gcc/config/arm/arm.cc | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/config/arm/arm.cc b/gcc/config/arm/arm.cc index 2925907..33fb98d 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)); |