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| author | Shengchen Kan <shengchen.kan@intel.com> | 2023-02-16 21:17:17 +0800 |
|---|---|---|
| committer | Shengchen Kan <shengchen.kan@intel.com> | 2023-02-17 09:53:54 +0800 |
| commit | df277ec67efd1bec3aa2fa8b02d84db0ea8b2f1c (patch) | |
| tree | 00a37d00d427cf14c36fbd95305cc95928c62d95 /llvm/unittests/IR/DominatorTreeTest.cpp | |
| parent | 7495a2e51bff6303fdb8f6113510012028e2d9bb (diff) | |
| download | llvm-df277ec67efd1bec3aa2fa8b02d84db0ea8b2f1c.zip llvm-df277ec67efd1bec3aa2fa8b02d84db0ea8b2f1c.tar.gz llvm-df277ec67efd1bec3aa2fa8b02d84db0ea8b2f1c.tar.bz2 | |
[X86][MC] Fix the bug of -output-asm-variant=1 for intel syntax
Before this patch
```
$ echo "leal (,%r15), %eax" | llvm-mc --show-encoding --output-asm-variant=1
lea eax, [r15] # encoding: [0x42,0x8d,0x04,0x3d,0x00,0x00,0x00,0x00]
$ echo "lea eax, [r15]" | llvm-mc --show-encoding -x86-asm-syntax=intel --output-asm-variant=1
lea eax, [r15] # encoding: [0x41,0x8d,0x07]
```
MC printed the register r15 as a base in intel syntax even when it's an index.
Then we got a different encoding by using the assembly from the output of the
first command.
I believe the behavior is too weird to be called a feature.
After this patch, we get
```
$ echo "leal (,%r15), %eax" | llvm-mc --show-encoding --output-asm-variant=1
lea eax, [1*r15] # encoding: [0x42,0x8d,0x04,0x3d,0x00,0x00,0x00,0x00]
```
Reviewed By: RKSimon, pengfei, MaskRay
Differential Revision: https://reviews.llvm.org/D144183
Diffstat (limited to 'llvm/unittests/IR/DominatorTreeTest.cpp')
0 files changed, 0 insertions, 0 deletions