[llvm] 6d00734 - Clarify how llvm-mca detects att vs intel syntax.

[Justin Lebar via llvm-commits]

Author: Justin Lebar
Date: 2020-02-06T19:35:09-08:00
New Revision: 6d007343decaeb8ea3db8de4bedf78b423bf116d

URL: https://github.com/llvm/llvm-project/commit/6d007343decaeb8ea3db8de4bedf78b423bf116d
DIFF: https://github.com/llvm/llvm-project/commit/6d007343decaeb8ea3db8de4bedf78b423bf116d.diff

LOG: Clarify how llvm-mca detects att vs intel syntax.

Reviewers: andreadb

Subscribers: tschuett, gbedwell, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D72385

Added: 
    

Modified: 
    llvm/docs/CommandGuide/llvm-mca.rst

Removed: 
    


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diff  --git a/llvm/docs/CommandGuide/llvm-mca.rst b/llvm/docs/CommandGuide/llvm-mca.rst
index efe29c4da4b5..703d39a31f6b 100644
--- a/llvm/docs/CommandGuide/llvm-mca.rst
+++ b/llvm/docs/CommandGuide/llvm-mca.rst
@@ -40,6 +40,10 @@ Or for Intel syntax:
 
   $ clang foo.c -O2 -target x86_64-unknown-unknown -mllvm -x86-asm-syntax=intel -S -o - | llvm-mca -mcpu=btver2
 
+(:program:`llvm-mca` detects Intel syntax by the presence of an `.intel_syntax`
+directive at the beginning of the input.  By default its output syntax matches
+that of its input.)
+
 Scheduling models are not just used to compute instruction latencies and
 throughput, but also to understand what processor resources are available
 and how to simulate them.