Displaying 3 results from an estimated 3 matches for "store40fi".
2012 Jan 05
0
[LLVMdev] Spilling of partly (un)defined registers
...%vreg59:hi24<def,undef> = COPY %a1_gh<kill>, %vreg59<imp-def>;
aN40_0_7:%vreg59
Due to high register pressure vreg59 is spilled
**** Local spiller rewriting MBB '':
%vreg59:hi24<def,undef> = COPY %a1_gh<kill>, %vreg59<imp-def>;
aN40_0_7:%vreg59
Store: Store40FI %a1_40<kill>,<fi#0>;
mem:ST6[FixedStack0](align=2)
And now the verifier complains:
*** Bad machine code: Using an undefined physical register ***
- function: accumconv
- basic block: 0x97baae0 (BB#0)
- instruction: Store40FI %a1_40<kill>,<fi#0>;
mem:ST6[FixedStack0](align=...
2014 Aug 22
2
[LLVMdev] Help with definition of subregisters; spill, rematerialization and implicit uses
...vreg1954 [5000r,5056r:0)[5056r,5348r:1) 0 at 5000r 1 at 5056r
And vreg1954 is mentioned in these instructions:
5000B %vreg1954:hi16<def,read-undef> = mv_any16 32766
[...]
5048B mv_ar16_r16_rmod1 %vreg1954:hi16, %vreg1753
5056B %vreg1954:lo16<def> = mv_nimm6_ar16 0
5064B Store40FI %vreg1954, <fi#2>
[...]
5128B %vreg223<def> = COPY %vreg1954
[...]
5216B %vreg1178<def> = COPY %vreg1954
[...]
5348B %vreg1955<def> = COPY %vreg1954
Then it tries to rematerialize:
Value %vreg1954:0 at 5000r may remat from %vreg1954:hi16<def,read-undef&...
2014 Aug 19
2
[LLVMdev] Help with definition of subregisters; spill, rematerialization and implicit uses
Hi Quentin,
On 08/15/14 19:01, Quentin Colombet wrote:
[...]
>> The question is: How should true subregister definitions be
>> expressed so that they do not interfere with each other? See the
>> detailed problem description below.
>
> We do have a limitation in our current liveness tracking for
> sub-register. Therefore, I am not sure that is possible.
>
>