From: YunQiang Su <syq@gcc.gnu.org>
Date: Mon, 10 Jun 2024 06:31:12 +0000 (+0800)
Subject: MIPS: Use FPU-enabled tune for mips32/mips64/mips64r2/mips64r3/mips64r5
X-Git-Tag: basepoints/gcc-16~8322
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f10896c8e5fe34e51ea61aaa4d4aaedb4677ff13;p=thirdparty%2Fgcc.git

MIPS: Use FPU-enabled tune for mips32/mips64/mips64r2/mips64r3/mips64r5

Currently, the default tune value of mips32 is PROCESSOR_4KC, and
the default tune value of mips64/mips64r2/mips64r3/mips64r5 is
PROCESSOR_5KC.  PROCESSOR_4KC and PROCESSOR_5KC are both FPU-less.

Let's use PROCESSOR_24KF1_1 for mips32, and PROCESSOR_5KF for mips64/
mips64r2/mips64r3/mips64r5.

We find this problem when we try to fix gcc.target/mips/movcc-3.c.

gcc:
	* config/mips/mips-cpus.def: Use PROCESSOR_24KF1_1 for mips32;
	Use PROCESSOR_5KF for mips64/mips64r2/mips64r3/mips64r5.
---

diff --git a/gcc/config/mips/mips-cpus.def b/gcc/config/mips/mips-cpus.def
index 490195406e7..17bbba42bd6 100644
--- a/gcc/config/mips/mips-cpus.def
+++ b/gcc/config/mips/mips-cpus.def
@@ -42,17 +42,17 @@ MIPS_CPU ("mips4", PROCESSOR_R10000, MIPS_ISA_MIPS4, PTF_AVOID_BRANCHLIKELY_SIZE
    in revisions 2 and earlier, but revision 3 is likely to downgrade
    that to a recommendation to avoid the instructions in code that
    isn't tuned to a specific processor.  */
-MIPS_CPU ("mips32", PROCESSOR_4KC, MIPS_ISA_MIPS32, PTF_AVOID_BRANCHLIKELY_ALWAYS)
+MIPS_CPU ("mips32", PROCESSOR_24KF1_1, MIPS_ISA_MIPS32, PTF_AVOID_BRANCHLIKELY_ALWAYS)
 MIPS_CPU ("mips32r2", PROCESSOR_74KF2_1, MIPS_ISA_MIPS32R2, PTF_AVOID_BRANCHLIKELY_ALWAYS)
 /* mips32r3 is micromips hense why it uses the M4K processor.  */
 MIPS_CPU ("mips32r3", PROCESSOR_M4K, MIPS_ISA_MIPS32R3, PTF_AVOID_BRANCHLIKELY_ALWAYS)
 MIPS_CPU ("mips32r5", PROCESSOR_P5600, MIPS_ISA_MIPS32R5, PTF_AVOID_BRANCHLIKELY_ALWAYS)
 MIPS_CPU ("mips32r6", PROCESSOR_I6400, MIPS_ISA_MIPS32R6, 0)
-MIPS_CPU ("mips64", PROCESSOR_5KC, MIPS_ISA_MIPS64, PTF_AVOID_BRANCHLIKELY_ALWAYS)
+MIPS_CPU ("mips64", PROCESSOR_5KF, MIPS_ISA_MIPS64, PTF_AVOID_BRANCHLIKELY_ALWAYS)
 /* ??? For now just tune the generic MIPS64r2 and above for 5KC as well.   */
-MIPS_CPU ("mips64r2", PROCESSOR_5KC, MIPS_ISA_MIPS64R2, PTF_AVOID_BRANCHLIKELY_ALWAYS)
-MIPS_CPU ("mips64r3", PROCESSOR_5KC, MIPS_ISA_MIPS64R3, PTF_AVOID_BRANCHLIKELY_ALWAYS)
-MIPS_CPU ("mips64r5", PROCESSOR_5KC, MIPS_ISA_MIPS64R5, PTF_AVOID_BRANCHLIKELY_ALWAYS)
+MIPS_CPU ("mips64r2", PROCESSOR_5KF, MIPS_ISA_MIPS64R2, PTF_AVOID_BRANCHLIKELY_ALWAYS)
+MIPS_CPU ("mips64r3", PROCESSOR_5KF, MIPS_ISA_MIPS64R3, PTF_AVOID_BRANCHLIKELY_ALWAYS)
+MIPS_CPU ("mips64r5", PROCESSOR_5KF, MIPS_ISA_MIPS64R5, PTF_AVOID_BRANCHLIKELY_ALWAYS)
 MIPS_CPU ("mips64r6", PROCESSOR_I6400, MIPS_ISA_MIPS64R6, 0)
 
 /* MIPS I processors.  */