[PATCH] D140160: [llvm][SelectionDAGBuilder] codegen callbr.landingpad intrinsic

[Nick Desaulniers via Phabricator via llvm-commits]

nickdesaulniers added inline comments.


================
Comment at: llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp:11600-11601
+
+// Consider the following MIR after SelectionDAG, which produces output in
+// phyregs in the first case or virtregs in the second case.
+//
----------------
Ok so given `"=@cc"` sort of constraints, we get:
```
  INLINEASM_BR &"" [maystore] [attdialect], $0:[regdef:GR32], def %1:gr32, $1:[imm], %bb.2
  %2:gr8 = SETCCr 4, implicit $eflags
  %3:gr32 = MOVZX32rr8 killed %2:gr8
  %0:gr64 = SUBREG_TO_REG 0, killed %3:gr32, %subreg.sub_32bit
```


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D140160/new/

https://reviews.llvm.org/D140160