[all-commits] [llvm/llvm-project] 169ae6: [APInt] Allow extending and truncating to the same...
Jay Foad via All-commits
all-commits at lists.llvm.org
Sat May 14 02:04:00 PDT 2022
Branch: refs/heads/main
Home: https://github.com/llvm/llvm-project
Commit: 169ae6db69882605a69e184237640f0c557243ee
https://github.com/llvm/llvm-project/commit/169ae6db69882605a69e184237640f0c557243ee
Author: Jay Foad <jay.foad at amd.com>
Date: 2022-05-14 (Sat, 14 May 2022)
Changed paths:
M llvm/include/llvm/ADT/APInt.h
M llvm/lib/Support/APInt.cpp
M llvm/unittests/ADT/APIntTest.cpp
Log Message:
-----------
[APInt] Allow extending and truncating to the same width
Allow zext, sext, trunc, truncUSat and truncSSat to extend or truncate
to the same bit width, which is a no-op.
Disallowing this forced clients to use workarounds like using
zextOrTrunc (even though they never wanted truncation) or zextOrSelf
(even though they did not want its strange behaviour of allowing a
*smaller* bit width, which is also treated as a no-op).
Differential Revision: https://reviews.llvm.org/D125556
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