3 Commits

Author	SHA1	Message	Date
Fangrui Song	f7516c7f3f	[CodeGen] Support arrays with initializers of 64-bit size ... Based on @OfekShochat's https://reviews.llvm.org/D133648 init.c is the primary test for array initialization, but it uses a 32-bit triple, which would lead to an "array is too large" error. Add the new test to array-init.c instead. Fix #57353 Pull Request: https://github.com/llvm/llvm-project/pull/92473	2024-05-17 10:59:39 -07:00
Manoj Gupta	4b3eefa5e8	Disable -fmerge-all-constants as default. ... Summary: "-fmerge-all-constants" is a non-conforming optimization and should not be the default. It is also causing miscompiles when building Linux Kernel (https://lkml.org/lkml/2018/3/20/872). Fixes PR18538. Reviewers: rjmccall, rsmith, chandlerc Reviewed By: rsmith, chandlerc Subscribers: srhines, cfe-commits Differential Revision: https://reviews.llvm.org/D45289 llvm-svn: 329300	2018-04-05 15:29:52 +00:00
Matt Davis	2930d7662e	[CodeGen] Use the zero initializer instead of storing an all zero representation. ... Summary: This change avoids the overhead of storing, and later crawling, an initializer list of all zeros for arrays. When LLVM visits this (llvm/IR/Constants.cpp) ConstantArray::getImpl() it will scan the list looking for an array of all zero. We can avoid the store, and short-cut the scan, by detecting all zeros when clang builds-up the initialization representation. This was brought to my attention when investigating PR36030 Reviewers: majnemer, rjmccall Reviewed By: rjmccall Subscribers: cfe-commits Differential Revision: https://reviews.llvm.org/D42549 llvm-svn: 324776	2018-02-09 22:10:09 +00:00