On 2/15/21 6:25 AM, Richard Sandiford wrote:
> Peter Bergner writes:
>> 2021-02-12 Peter Bergner
>>
>> gcc/
>> PR rtl-optimization/98872
>> * init-regs.c (initialize_uninitialized_regs): Skip initialization
>> if CONST0_RTX is NULL.
>>
>> gcc/testsuite/
>> PR rtl-optimizatio
Peter Bergner writes:
> 2021-02-12 Peter Bergner
>
> gcc/
> PR rtl-optimization/98872
> * init-regs.c (initialize_uninitialized_regs): Skip initialization
> if CONST0_RTX is NULL.
>
> gcc/testsuite/
> PR rtl-optimization/98872
> * gcc.target/powerpc/pr98872.c: New
On 2/12/21 4:21 PM, Peter Bergner wrote:
> rtl-optimization: Fix uninitialized use of opaque mode variable ICE [PR98872]
>
> The initialize_uninitialized_regs function emits (set (reg:) (CONST0_RTX))
> for all uninitialized pseudo uses. However, some modes (eg, opaque modes)
>
e do not ICE on the tests below. */
>
> Do the existing tests already check the expected code for this?
Yes, our mma-builtin-*.c tests check for expected output.
The updated patch below fixes the bug too and is much simpler! :-)
rtl-optimization: Fix uninitialized use of opaque mode
