[AArch64][GlobalISel] Add support for narrowScalar of G_ZEXT
authorAmara Emerson <aemerson@apple.com>
Wed, 21 Aug 2019 00:12:37 +0000 (00:12 +0000)
committerAmara Emerson <aemerson@apple.com>
Wed, 21 Aug 2019 00:12:37 +0000 (00:12 +0000)
commit56606a4db3e7c6b4a1b3bfd3b2dfc04c81a2247e
tree43e275c99cda9d1e1ef5b20f7565ed8c02569844
parentd979a2993561d42612da5ef45122fb69466967c3
[AArch64][GlobalISel] Add support for narrowScalar of G_ZEXT

We do this by merging the source with the high bits set to 0.

Differential Revision: https://reviews.llvm.org/D66181

llvm-svn: 369480
llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
llvm/lib/Target/AArch64/AArch64LegalizerInfo.cpp
llvm/lib/Target/X86/X86RegisterBankInfo.cpp
llvm/test/CodeGen/AArch64/GlobalISel/legalize-sext-128.mir [deleted file]
llvm/test/CodeGen/AArch64/GlobalISel/legalize-sext-zext-128.mir [new file with mode: 0644]
llvm/test/CodeGen/AArch64/GlobalISel/legalizer-info-validation.mir