https://gcc.gnu.org/g:4a5a63596dd82d20fd1cc11a69ec1e4729225645
commit r15-4859-g4a5a63596dd82d20fd1cc11a69ec1e4729225645
Author: Jeff Law <j...@ventanamicro.com>
Date: Fri Nov 1 20:28:07 2024 -0600
[committed] Make LRA default for ft32 and remove -mlra option
I was looking to clean up an old patch I'm carrying in my tester. My first
thought was that ft32 was likely going to be deprecated because it wasn't
using
LRA -- which in turn would mean the patch in question could just be removed.
But then I checked, ft32 has an LRA option and if turned on it gets the
exact
same test results as with reload. While the port mentions a failure with
sieve.c, that's been there since the port was introduced in 2015.
It's working well enough that I think just converting it is the right thing
to
do. The testsuite patch which precipitated this one will follow separately.
I've kept the -mlra option for compatibility sake, but it's ignored.
Pushing to the trunk.
gcc/
* config/ft32/ft32.cc (ft32_lra_p): Remove.
(TARGET_LRA_P): Likewise.
* config/ft32/ft32.opt: Make -mlra ignored.
* doc/invoke.texi: Adjust documentation for -mlra on ft32.
Diff:
---
gcc/config/ft32/ft32.cc | 13 -------------
gcc/config/ft32/ft32.opt | 4 ++--
gcc/doc/invoke.texi | 3 +--
3 files changed, 3 insertions(+), 17 deletions(-)
diff --git a/gcc/config/ft32/ft32.cc b/gcc/config/ft32/ft32.cc
index 3c6e5fb1f6ca..80345dcdd7eb 100644
--- a/gcc/config/ft32/ft32.cc
+++ b/gcc/config/ft32/ft32.cc
@@ -831,19 +831,6 @@ ft32_target_case_values_threshold (void)
ft32_addr_space_legitimate_address_p
-// Enabling LRA gives the infamous
-// internal compiler error: Max. number of generated reload insns per insn
is achieved (90)
-// errors e.g. when compiling sieve.c
-
-static bool
-ft32_lra_p (void)
-{
- return ft32_lra_flag;
-}
-
-#undef TARGET_LRA_P
-#define TARGET_LRA_P ft32_lra_p
-
static bool
reg_ok_for_base_p (rtx r, bool strict)
{
diff --git a/gcc/config/ft32/ft32.opt b/gcc/config/ft32/ft32.opt
index cecc54845e30..419c82a7102e 100644
--- a/gcc/config/ft32/ft32.opt
+++ b/gcc/config/ft32/ft32.opt
@@ -23,8 +23,8 @@ Target Mask(SIM)
Target the software simulator.
mlra
-Target Var(ft32_lra_flag) Init(0) Save
-Use LRA instead of reload.
+Target RejectNegative Ignore
+Ignored, but preserved for backward compatibility.
mnodiv
Target Mask(NODIV)
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index fd6c0c447096..8d92d46eca16 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -25998,8 +25998,7 @@ I/O functions are needed.
@opindex mlra
@item -mlra
-Enable Local Register Allocation. This is still experimental for FT32,
-so by default the compiler uses standard reload.
+Does nothing. Preserved for backward compatibility.
@opindex mnodiv
@item -mnodiv
