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| author | Craig Topper <craig.topper@sifive.com> | 2021-03-29 09:54:26 -0700 |
|---|---|---|
| committer | Craig Topper <craig.topper@sifive.com> | 2021-03-29 10:06:17 -0700 |
| commit | 54bacaf31127ee9d19e8df7ad7de5c94a4fc7c62 (patch) | |
| tree | 1dda5b402a15e078bc60c7b6ab8001868e7d6670 /llvm/lib/Transforms/Utils/Utils.cpp | |
| parent | ef76a333faca3e41036f60bb598173d410aab24b (diff) | |
| download | llvm-54bacaf31127ee9d19e8df7ad7de5c94a4fc7c62.zip llvm-54bacaf31127ee9d19e8df7ad7de5c94a4fc7c62.tar.gz llvm-54bacaf31127ee9d19e8df7ad7de5c94a4fc7c62.tar.bz2 | |
[X86] Always use rip-relative addressing on 64-bit when rematerializing all zeros/ones registers using a folded load.
Previously we only used RIP relative when PIC was enabled. But
we know we're in small/kernel code model here so we should
be able to always use RIP-relative which will give a smaller
encoding.
Here's a godbolt link that demonstrates the current codegen https://godbolt.org/z/j3158o
Note in the non-PIC version the load from .LCPI0_0 doesn't use
RIP-relative addressing, but if you change the constant in the
source from 0.0 to 1.0 it will become RIP-relative.
Reviewed By: RKSimon
Differential Revision: https://reviews.llvm.org/D97208
Diffstat (limited to 'llvm/lib/Transforms/Utils/Utils.cpp')
0 files changed, 0 insertions, 0 deletions