Nemanja Ivanovic 075a92dea1 [PowerPC] Do not use FISel for calls and TOC-based accesses with PC-Rel ...

PC-Relative addressing introduces a fair bit of complexity for correctly
eliminating TOC accesses. FastISel does not include any of that handling so we
miscompile code with -mcpu=pwr10 -O0 if it includes an external call that
FastISel does not handle followed by any of the following:

    Floating point constant materialization
    Materialization of a GlobalValue
    Call that FastISel does handle

This patch switches to SDISel for any of the above.

Differential revision: https://reviews.llvm.org/D86343

2020-08-24 16:51:44 -05:00

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