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Adjust isel patterns after recent commit. Fixes https://llvm.org/PR43194.
llvm-svn: 370913
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The motivating bugs are:
https://bugs.llvm.org/show_bug.cgi?id=41340
https://bugs.llvm.org/show_bug.cgi?id=42697
As discussed there, we could view this as a failure of IR canonicalization,
but then we would need to implement a backend fixup with target overrides
to get this right in all cases. Instead, we can just view this as a codegen
opportunity. It's not even clear for x86 exactly when we should favor
test+set; some CPUs have better theoretical throughput for the ALU ops than
bt/test.
This patch is made more complicated than I expected because there's an early
DAGCombine for 'and' that can change types of the intermediate ops via
trunc+anyext.
Differential Revision: https://reviews.llvm.org/D66687
llvm-svn: 370668
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llvm-svn: 369947
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llvm-svn: 369875
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More coverage for D66687
(assuming we make this a generic combine with TLI hook).
llvm-svn: 369874
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Summary:
These tests are being affected by an upcoming patch,
so having an understandable (autogenerated) diff is helpful.
This target, again, prefers `-march`:
```
llvm/test/CodeGen/Hexagon$ grep -r triple | wc -l
467
llvm/test/CodeGen/Hexagon$ grep -r march | wc -l
1167
```
Reviewers: RKSimon, kparzysz
Reviewed By: kparzysz
Subscribers: xbolva00, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D62867
llvm-svn: 362605
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llvm-svn: 327271
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