[PATCH] D157690: [GlobalISel] Rewrite some simple rules using MIR Patterns

[Matt Arsenault via Phabricator via llvm-commits]

arsenm accepted this revision.
arsenm added inline comments.
This revision is now accepted and ready to land.


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Comment at: llvm/test/CodeGen/AArch64/GlobalISel/prelegalizercombiner-trivial-arith.mir:313-315
+    ; CHECK-NEXT: %c:_(s64) = G_CONSTANT i64 72340172838076673
+    ; CHECK-NEXT: %mul:_(s64) = G_MUL %zext_zero, %c
+    ; CHECK-NEXT: $x0 = COPY %mul(s64)
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arsenm wrote:
> This regressed?
I think I see why, this is the lack of constant folding extensions which I have a patch for. I think we need less look through handling and more consistent constant and copy folding


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  https://reviews.llvm.org/D157690/new/

https://reviews.llvm.org/D157690