From 70a6dbe7e37e6920eb65a289f8725ae2fa60b28f Mon Sep 17 00:00:00 2001
From: Eric Botcazou <ebotcazou@adacore.com>
Date: Tue, 3 Jan 2017 21:13:49 +0000
Subject: [PATCH] invoke.texi (SPARC options): Document -mlra as the default.
* doc/invoke.texi (SPARC options): Document -mlra as the default.
* config/sparc/sparc.c (sparc_option_override): Force LRA unless
-mlra/-mno-lra was passed to the compiler.
From-SVN: r244034
---
gcc/ChangeLog | 6 ++++++
gcc/config/sparc/sparc.c | 4 ++++
gcc/doc/invoke.texi | 4 ++--
3 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 3b31f166df7f..281a4a43a073 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2017-01-03 Eric Botcazou <ebotcazou@adacore.com>
+
+ * doc/invoke.texi (SPARC options): Document -mlra as the default.
+ * config/sparc/sparc.c (sparc_option_override): Force LRA unless
+ -mlra/-mno-lra was passed to the compiler.
+
2017-01-03 James Cowgill <James.Cowgill@imgtec.com>
PR rtl-optimization/65618
diff --git a/gcc/config/sparc/sparc.c b/gcc/config/sparc/sparc.c
index ae0d0f67a724..b9213c30bcb0 100644
--- a/gcc/config/sparc/sparc.c
+++ b/gcc/config/sparc/sparc.c
@@ -1523,6 +1523,10 @@ sparc_option_override (void)
if (TARGET_ARCH32)
target_flags &= ~MASK_STACK_BIAS;
+ /* Use LRA instead of reload, unless otherwise instructed. */
+ if (!(target_flags_explicit & MASK_LRA))
+ target_flags |= MASK_LRA;
+
/* Supply a default value for align_functions. */
if (align_functions == 0
&& (sparc_cpu == PROCESSOR_ULTRASPARC
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index a8f8efe4e8e2..f1794bc0fe69 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -23271,8 +23271,8 @@ in 64-bit mode.
@itemx -mno-lra
@opindex mlra
@opindex mno-lra
-Enable Local Register Allocation. This is experimental for SPARC, so by
-default the compiler uses standard reload (i.e. @option{-mno-lra}).
+Enable Local Register Allocation. This is the default for SPARC since GCC 7
+so @option{-mno-lra} needs to be passed to get old Reload.
@item -mcpu=@var{cpu_type}
@opindex mcpu
--
GitLab