From: Richard Earnshaw <rearnsha@arm.com>
Date: Tue, 31 Jul 2018 17:36:00 +0000 (+0000)
Subject: AArch64 - Add new option -mtrack-speculation
X-Git-Tag: basepoints/gcc-10~5002
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3b0c25022ec92d117d4ff6d7e11fdfb5327eff0e;p=thirdparty%2Fgcc.git

AArch64 - Add new option -mtrack-speculation

This patch doesn't do anything useful, it simply adds a new command-line
option -mtrack-speculation to AArch64.  Subsequent patches build on this.

	* config/aarch64/aarch64.opt (mtrack-speculation): New target option.

From-SVN: r263171
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 179f97ad50dd..d547126badf9 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2018-07-31  Richard Earnshaw  <rearnsha@arm.com>
+
+	* config/aarch64/aarch64.opt (mtrack-speculation): New target option.
+
 2018-07-31  Richard Earnshaw  <rearnsha@arm.com>
 
 	* config/aarch64.md (unspecv): Add UNSPECV_SPECULAION_BARRIER.
diff --git a/gcc/config/aarch64/aarch64.opt b/gcc/config/aarch64/aarch64.opt
index 1426b45ff0ff..bc9b22a4464c 100644
--- a/gcc/config/aarch64/aarch64.opt
+++ b/gcc/config/aarch64/aarch64.opt
@@ -214,3 +214,7 @@ Target RejectNegative Joined Enum(sve_vector_bits) Var(aarch64_sve_vector_bits)
 mverbose-cost-dump
 Common Undocumented Var(flag_aarch64_verbose_cost)
 Enables verbose cost model dumping in the debug dump files.
+
+mtrack-speculation
+Target Var(aarch64_track_speculation)
+Generate code to track when the CPU might be speculating incorrectly.