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| author | Quentin Colombet <qcolombet@apple.com> | 2013-10-02 22:07:57 +0000 |
|---|---|---|
| committer | Quentin Colombet <qcolombet@apple.com> | 2013-10-02 22:07:57 +0000 |
| commit | 797f06e19b6f17217a69dea4d6ce900625432595 (patch) | |
| tree | 3dc66bee70b78d434a028c2e8a7d7206f465916a /include | |
| parent | 18b222a87264145979de8216e7243b0ac8921c9d (diff) | |
| download | llvm-797f06e19b6f17217a69dea4d6ce900625432595.tar.gz llvm-797f06e19b6f17217a69dea4d6ce900625432595.tar.bz2 llvm-797f06e19b6f17217a69dea4d6ce900625432595.tar.xz | |
[llvm-c][Disassembler] Add an option to print latency information in
disassembled output alongside the instructions.
E.g., on a vector shuffle operation with a memory operand, disassembled
outputs are:
* Without the option:
vpshufd $-0x79, (%rsp), %xmm0
* With the option:
vpshufd $-0x79, (%rsp), %xmm0 ## Latency: 5
The printed latency is extracted from the schedule model available in the
disassembler context. Thus, this option has no effect if there is not a
scheduling model for the target.
This boils down to one may need to specify the CPU string, so that this
option could have an effect.
Note: Latency < 2 are not printed.
This part of <rdar://problem/14687488>.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191859 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include')
| -rw-r--r-- | include/llvm-c/Disassembler.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/llvm-c/Disassembler.h b/include/llvm-c/Disassembler.h index 0c5bd5c5e8..4732e51a97 100644 --- a/include/llvm-c/Disassembler.h +++ b/include/llvm-c/Disassembler.h @@ -172,6 +172,8 @@ int LLVMSetDisasmOptions(LLVMDisasmContextRef DC, uint64_t Options); #define LLVMDisassembler_Option_AsmPrinterVariant 4 /* The option to set comment on instructions */ #define LLVMDisassembler_Option_SetInstrComments 8 + /* The option to print latency information alongside instructions */ +#define LLVMDisassembler_Option_PrintLatency 16 /** * Dispose of a disassembler context. |