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a1_4
2012 Jan 05
0
[LLVMdev] Spilling of partly (un)defined registers
...4<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=2)
- op...