chenglin.bi 9403a8bc37 [GlobalISel][AArch64] Fix miscompile caused by wrong G_ZEXT selection in GISel
The miscompile case's G_ZEXT has a G_FREEZE source.  Similar to D127154, this patch removed isDef32, relying on the AArch64MIPeephole optimizer to remove redundant SUBREG_TO_REG nodes also in GISel.

Fix #58431

Reviewed By: paquette

Differential Revision: https://reviews.llvm.org/D136433
2022-10-26 09:54:13 +08:00
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++ SVE CodeGen Warnings ++

When the WARN check lines fail in the SVE codegen tests it most likely means you
have introduced a warning due to:
1. Adding an invalid call to VectorType::getNumElements() or EVT::getVectorNumElements()
   when the type is a scalable vector.
2. Relying upon an implicit cast conversion from TypeSize to uint64_t.

For generic code, please modify your code to work with ElementCount and TypeSize directly.
For target-specific code that only deals with fixed-width vectors, use the fixed-size interfaces.
Please refer to the code where those functions live for more details.