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Revision tags: llvmorg-20.1.0, llvmorg-20.1.0-rc3, llvmorg-20.1.0-rc2, llvmorg-20.1.0-rc1, llvmorg-21-init, llvmorg-19.1.7, llvmorg-19.1.6, llvmorg-19.1.5, llvmorg-19.1.4, llvmorg-19.1.3, llvmorg-19.1.2, llvmorg-19.1.1, llvmorg-19.1.0, llvmorg-19.1.0-rc4, llvmorg-19.1.0-rc3, llvmorg-19.1.0-rc2, llvmorg-19.1.0-rc1, llvmorg-20-init, llvmorg-18.1.8, llvmorg-18.1.7, llvmorg-18.1.6, llvmorg-18.1.5, llvmorg-18.1.4, llvmorg-18.1.3, llvmorg-18.1.2, llvmorg-18.1.1, llvmorg-18.1.0, llvmorg-18.1.0-rc4, llvmorg-18.1.0-rc3, llvmorg-18.1.0-rc2, llvmorg-18.1.0-rc1, llvmorg-19-init, llvmorg-17.0.6, llvmorg-17.0.5, llvmorg-17.0.4, llvmorg-17.0.3, llvmorg-17.0.2, llvmorg-17.0.1, llvmorg-17.0.0, llvmorg-17.0.0-rc4, llvmorg-17.0.0-rc3, llvmorg-17.0.0-rc2, llvmorg-17.0.0-rc1, llvmorg-18-init, llvmorg-16.0.6, llvmorg-16.0.5, llvmorg-16.0.4, llvmorg-16.0.3, llvmorg-16.0.2, llvmorg-16.0.1, llvmorg-16.0.0, llvmorg-16.0.0-rc4, llvmorg-16.0.0-rc3, llvmorg-16.0.0-rc2, llvmorg-16.0.0-rc1, llvmorg-17-init, llvmorg-15.0.7, llvmorg-15.0.6, llvmorg-15.0.5, llvmorg-15.0.4, llvmorg-15.0.3, llvmorg-15.0.2, llvmorg-15.0.1, llvmorg-15.0.0, llvmorg-15.0.0-rc3, llvmorg-15.0.0-rc2, llvmorg-15.0.0-rc1, llvmorg-16-init, llvmorg-14.0.6, llvmorg-14.0.5, llvmorg-14.0.4, llvmorg-14.0.3, llvmorg-14.0.2, llvmorg-14.0.1, llvmorg-14.0.0, llvmorg-14.0.0-rc4, llvmorg-14.0.0-rc3, llvmorg-14.0.0-rc2, llvmorg-14.0.0-rc1, llvmorg-15-init, llvmorg-13.0.1, llvmorg-13.0.1-rc3, llvmorg-13.0.1-rc2, llvmorg-13.0.1-rc1, llvmorg-13.0.0, llvmorg-13.0.0-rc4, llvmorg-13.0.0-rc3, llvmorg-13.0.0-rc2, llvmorg-13.0.0-rc1, llvmorg-14-init, llvmorg-12.0.1, llvmorg-12.0.1-rc4, llvmorg-12.0.1-rc3, llvmorg-12.0.1-rc2, llvmorg-12.0.1-rc1, llvmorg-12.0.0, llvmorg-12.0.0-rc5, llvmorg-12.0.0-rc4, llvmorg-12.0.0-rc3, llvmorg-12.0.0-rc2, llvmorg-11.1.0, llvmorg-11.1.0-rc3, llvmorg-12.0.0-rc1, llvmorg-13-init, llvmorg-11.1.0-rc2, llvmorg-11.1.0-rc1, llvmorg-11.0.1, llvmorg-11.0.1-rc2, llvmorg-11.0.1-rc1, llvmorg-11.0.0, llvmorg-11.0.0-rc6, llvmorg-11.0.0-rc5, llvmorg-11.0.0-rc4, llvmorg-11.0.0-rc3, llvmorg-11.0.0-rc2, llvmorg-11.0.0-rc1, llvmorg-12-init, llvmorg-10.0.1, llvmorg-10.0.1-rc4, llvmorg-10.0.1-rc3, llvmorg-10.0.1-rc2 |
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| #
acb30f68 |
| 17-Jun-2020 |
Alexandre Ganea <[email protected]> |
[X86] For 32-bit targets, emit two-byte NOP when possible
In order to support hot-patching, we need to make sure the first emitted instruction in a function is a two-byte+ op. This is already the ca
[X86] For 32-bit targets, emit two-byte NOP when possible
In order to support hot-patching, we need to make sure the first emitted instruction in a function is a two-byte+ op. This is already the case on x86_64, which seems to always emit two-byte+ ops. However on 32-bit targets this wasn't the case.
PATCHABLE_OP now lowers to a XCHG AX, AX, (66 90) like MSVC does. However when targetting pentium3 (/arch:SSE) or i386 (/arch:IA32) targets, we generate MOV EDI,EDI (8B FF) like MSVC does. This is for compatiblity reasons with older tools that rely on this two byte pattern.
Differential Revision: https://reviews.llvm.org/D81301
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Revision tags: llvmorg-10.0.1-rc1, llvmorg-10.0.0, llvmorg-10.0.0-rc6, llvmorg-10.0.0-rc5, llvmorg-10.0.0-rc4, llvmorg-10.0.0-rc3 |
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| #
f554e272 |
| 15-Feb-2020 |
Fangrui Song <[email protected]> |
[AsmPrinter] Omit unique ID for __patchable_function_entries sections
Follow-up for D74006.
When the integrated assembler is used, we use SHF_LINK_ORDER. The
linked-to symbol is part of ELFSection
[AsmPrinter] Omit unique ID for __patchable_function_entries sections
Follow-up for D74006.
When the integrated assembler is used, we use SHF_LINK_ORDER. The
linked-to symbol is part of ELFSectionKey, thus we can omit the unique
ID.
show more ...
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Revision tags: llvmorg-10.0.0-rc2 |
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| #
0fbe2215 |
| 04-Feb-2020 |
Fangrui Song <[email protected]> |
[MC][ELF] Make linked-to symbol name part of ELFSectionKey
https://bugs.llvm.org/show_bug.cgi?id=44775
This rule has been implemented by GNU as https://sourceware.org/ml/binutils/2020-02/msg00028.h
[MC][ELF] Make linked-to symbol name part of ELFSectionKey
https://bugs.llvm.org/show_bug.cgi?id=44775
This rule has been implemented by GNU as https://sourceware.org/ml/binutils/2020-02/msg00028.html (binutils >= 2.35)
It allows us to simplify
```
.section .foo,"o",foo,unique,0
.section .foo,"o",bar,unique,1 # different section
```
to
```
.section .foo,"o",foo
.section .foo,"o",bar # different section
```
We consider the two `.foo` different even if the linked-to symbols foo and bar
are defined in the same section. This is a deliberate choice so that we don't
need to know the section where foo and bar are defined beforehand.
Differential Revision: https://reviews.llvm.org/D74006
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Revision tags: llvmorg-10.0.0-rc1 |
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| #
01da05b7 |
| 20-Jan-2020 |
Fangrui Song <[email protected]> |
[X86][test] Add tests for -fpatchable-function-entry=N,M (where M>0) and its interaction with -fcf-protection=branch
Reviewed By: nickdesaulniers
Differential Revision: https://reviews.llvm.org/D73
[X86][test] Add tests for -fpatchable-function-entry=N,M (where M>0) and its interaction with -fcf-protection=branch
Reviewed By: nickdesaulniers
Differential Revision: https://reviews.llvm.org/D73071
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| #
d232c215 |
| 20-Jan-2020 |
Fangrui Song <[email protected]> |
[AsmPrinter] Don't emit __patchable_function_entries entry if "patchable-function-entry"="0"
Add improve tests
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Revision tags: llvmorg-11-init |
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| #
a8fbdc57 |
| 05-Jan-2020 |
Fangrui Song <[email protected]> |
[X86] Support function attribute "patchable-function-entry"
For x86-64, we diverge from GCC -fpatchable-function-entry in that we
emit multi-byte NOPs.
Differential Revision: https://reviews.llvm.o
[X86] Support function attribute "patchable-function-entry"
For x86-64, we diverge from GCC -fpatchable-function-entry in that we
emit multi-byte NOPs.
Differential Revision: https://reviews.llvm.org/D72220
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