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[llvm-mca] fix formatting

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@329729 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Sanjay Patel 2018-04-10 17:56:24 +00:00
parent 538b65888c
commit 6592e3d4b5
1 changed files with 8 additions and 8 deletions
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16
docs/CommandGuide/llvm-mca.rst
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@ -41,20 +41,20 @@ assembly text:
.. code-block:: c++ .. code-block:: c++
int foo(int a, int b) { int foo(int a, int b) {
__asm volatile("# LLVM-MCA-BEGIN foo"); __asm volatile("# LLVM-MCA-BEGIN foo");
a += 42; a += 42;
__asm volatile("# LLVM-MCA-END"); __asm volatile("# LLVM-MCA-END");
a *= b; a *= b;
return a; return a;
} }
So for example, you can compile code with clang, output assembly, and pipe it So for example, you can compile code with clang, output assembly, and pipe it
directly into llvm-mca for analysis: directly into llvm-mca for analysis:
.. code-block:: bash .. code-block:: bash
$ clang foo.cpp -O2 -target x86_64-unknown-unknown -S -o - | llvm-mca -mcpu=btver2 $ clang foo.cpp -O2 -target x86_64-unknown-unknown -S -o - | llvm-mca -mcpu=btver2
Multiple regions can be specified provided that they do not overlap. A code Multiple regions can be specified provided that they do not overlap. A code
region can have an optional description. If no user defined region is specified, region can have an optional description. If no user defined region is specified,