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| author | Pete Couperus <petecoup@synopsys.com> | 2019-03-14 17:50:46 +0000 |
|---|---|---|
| committer | Pete Couperus <petecoup@synopsys.com> | 2019-03-14 17:50:46 +0000 |
| commit | 225c0bd61ee189264eb17e149b3c0bc8219a0478 (patch) | |
| tree | 0b95244540f0a0f52fc61c96a647c78f72973452 /llvm/lib/Support/CommandLine.cpp | |
| parent | a80d9ce5cfa1d109b895cd4837d0c1bb564775d7 (diff) | |
| download | llvm-225c0bd61ee189264eb17e149b3c0bc8219a0478.zip llvm-225c0bd61ee189264eb17e149b3c0bc8219a0478.tar.gz llvm-225c0bd61ee189264eb17e149b3c0bc8219a0478.tar.bz2 | |
[ARC] Better classify add/sub immediate instructions in frame lowering.
Summary:
Some operations have multiple ARC instructions that are applicable.
For instance, "add r0, r0, 123" can be encoded as a "LImm" instruction
with a 32-bit immediate (8-bytes), or as a signed 12-bit immediate instruction
for the case where the source and destination register are the same (4-bytes).
The ARC assembler will choose the shortest encoding, but we should track
the correct instruction in the compiler.
This patch fixes the instruction used in some cases from ARCFrameLowering.
Subscribers: hiraditya, jdoerfert, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D59326
llvm-svn: 356179
Diffstat (limited to 'llvm/lib/Support/CommandLine.cpp')
0 files changed, 0 insertions, 0 deletions