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.
Jeff
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 --git a/gcc/config/ft32/ft32.cc b/gcc/config/ft32/ft32.cc
index 3c6e5fb1f6c..80345dcdd7e 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 cecc54845e3..419c82a7102 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 ae52cc68c51..dbf374e0cfa 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -25901,8 +25901,7 @@ 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
