https://gcc.gnu.org/g:38179738abf34897eb03e17426c0507a595c9862
commit r16-543-g38179738abf34897eb03e17426c0507a595c9862
Author: Richard Earnshaw <rearn...@arm.com>
Date: Mon Apr 28 14:55:43 2025 +0100
arm: treat -mcpu/arch=iwmmxt{,2} like XScale
Treat options that select iwmmxt variants as we would for xscale. We
leave the feature bits in for now, since they are still needed
elsewhere, but they are never enabled.
Also remove the remaining testsuite framework support for iwmmxt,
since this will never trigger now.
gcc/
* config/arm/arm-cpus.in (arch iwmmxt): treat in the same
way as we would treat XScale.
(arch iwmmxt2): Likewise.
(cpu xscale): Add aliases for iwmmxt and iwmmxt2.
(cpu iwmmxt): Delete.
(cpu iwmmxt2): Delete.
* config/arm/arm-generic.md (load_ldsched_xscale): Remove references
to iwmmxt.
(load_ldsched): Likewise.
* config/arm/arm-tables.opt: Regenerated.
* config/arm/arm-tune.md: Regenerated.
* doc/sourcebuild.texi (arm_iwmmxt_ok): Delete.
gcc/testsuite/ChangeLog:
* gcc.target/arm/ivopts.c: Remove test for iwmmxt
* lib/target-supports.exp
(check_effective_target_arm_iwmmxt_ok): Delete.
Diff:
---
gcc/config/arm/arm-cpus.in | 22 ++++-----------
gcc/config/arm/arm-generic.md | 4 +--
gcc/config/arm/arm-tables.opt | 6 ----
gcc/config/arm/arm-tune.md | 53 +++++++++++++++++------------------
gcc/doc/sourcebuild.texi | 4 ---
gcc/testsuite/gcc.target/arm/ivopts.c | 3 +-
gcc/testsuite/lib/target-supports.exp | 13 ---------
7 files changed, 35 insertions(+), 70 deletions(-)
diff --git a/gcc/config/arm/arm-cpus.in b/gcc/config/arm/arm-cpus.in
index 1939d55b9fdb..b34c441ec76d 100644
--- a/gcc/config/arm/arm-cpus.in
+++ b/gcc/config/arm/arm-cpus.in
@@ -778,18 +778,19 @@ begin arch armv9-a
option bf16 add bf16 FP_ARMv8 DOTPROD
end arch armv9-a
+# We no-longer support the iwmmxt{,2} extensions, so treat these like xscale.
begin arch iwmmxt
- tune for iwmmxt
+ tune for xscale
tune flags LDSCHED STRONG XSCALE
base 5TE
- isa ARMv5te xscale iwmmxt
+ isa ARMv5te xscale
end arch iwmmxt
begin arch iwmmxt2
- tune for iwmmxt2
+ tune for xscale
tune flags LDSCHED STRONG XSCALE
base 5TE
- isa ARMv5te xscale iwmmxt iwmmxt2
+ isa ARMv5te xscale
end arch iwmmxt2
# CPU entries
@@ -924,23 +925,12 @@ end cpu arm10e
begin cpu xscale
tune flags LDSCHED XSCALE
+ alias iwmmxt iwmmxt2
architecture armv5te
isa xscale
costs xscale
end cpu xscale
-begin cpu iwmmxt
- tune flags LDSCHED XSCALE
- architecture iwmmxt
- costs xscale
-end cpu iwmmxt
-
-begin cpu iwmmxt2
- tune flags LDSCHED XSCALE
- architecture iwmmxt2
- costs xscale
-end cpu iwmmxt2
-
begin cpu fa606te
tune flags LDSCHED
architecture armv5te
diff --git a/gcc/config/arm/arm-generic.md b/gcc/config/arm/arm-generic.md
index c2700568c00a..a8af0e6f2556 100644
--- a/gcc/config/arm/arm-generic.md
+++ b/gcc/config/arm/arm-generic.md
@@ -96,14 +96,14 @@
(and (eq_attr "generic_sched" "yes")
(and (eq_attr "ldsched" "yes")
(and (eq_attr "type" "load_byte,load_4")
- (eq_attr "tune" "xscale,iwmmxt,iwmmxt2"))))
+ (eq_attr "tune" "xscale"))))
"core")
(define_insn_reservation "load_ldsched" 2
(and (eq_attr "generic_sched" "yes")
(and (eq_attr "ldsched" "yes")
(and (eq_attr "type" "load_byte,load_4")
- (eq_attr "tune" "!xscale,iwmmxt,iwmmxt2"))))
+ (eq_attr "tune" "!xscale"))))
"core")
(define_insn_reservation "load_or_store" 2
diff --git a/gcc/config/arm/arm-tables.opt b/gcc/config/arm/arm-tables.opt
index db7767a2d6cf..544de84df809 100644
--- a/gcc/config/arm/arm-tables.opt
+++ b/gcc/config/arm/arm-tables.opt
@@ -66,12 +66,6 @@ Enum(processor_type) String(arm10e) Value( TARGET_CPU_arm10e)
EnumValue
Enum(processor_type) String(xscale) Value( TARGET_CPU_xscale)
-EnumValue
-Enum(processor_type) String(iwmmxt) Value( TARGET_CPU_iwmmxt)
-
-EnumValue
-Enum(processor_type) String(iwmmxt2) Value( TARGET_CPU_iwmmxt2)
-
EnumValue
Enum(processor_type) String(fa606te) Value( TARGET_CPU_fa606te)
diff --git a/gcc/config/arm/arm-tune.md b/gcc/config/arm/arm-tune.md
index a04d1eeb62dd..20b5f932344d 100644
--- a/gcc/config/arm/arm-tune.md
+++ b/gcc/config/arm/arm-tune.md
@@ -25,31 +25,30 @@
fa526,fa626,arm7tdmi,
arm710t,arm9,arm9tdmi,
arm920t,arm10tdmi,arm9e,
- arm10e,xscale,iwmmxt,
- iwmmxt2,fa606te,fa626te,
- fmp626,fa726te,arm926ejs,
- arm1026ejs,arm1136js,arm1136jfs,
- arm1176jzs,arm1176jzfs,mpcorenovfp,
- mpcore,arm1156t2s,arm1156t2fs,
- cortexm1,cortexm0,cortexm0plus,
- cortexm1smallmultiply,cortexm0smallmultiply,cortexm0plussmallmultiply,
- genericv7a,cortexa5,cortexa7,
- cortexa8,cortexa9,cortexa12,
- cortexa15,cortexa17,cortexr4,
- cortexr4f,cortexr5,cortexr7,
- cortexr8,cortexm7,cortexm4,
- cortexm3,marvell_pj4,cortexa15cortexa7,
- cortexa17cortexa7,cortexa32,cortexa35,
- cortexa53,cortexa57,cortexa72,
- cortexa73,exynosm1,xgene1,
- cortexa57cortexa53,cortexa72cortexa53,cortexa73cortexa35,
- cortexa73cortexa53,cortexa55,cortexa75,
- cortexa76,cortexa76ae,cortexa77,
- cortexa78,cortexa78ae,cortexa78c,
- cortexa710,cortexx1,cortexx1c,
- neoversen1,cortexa75cortexa55,cortexa76cortexa55,
- neoversev1,neoversen2,cortexm23,
- cortexm33,cortexm35p,cortexm52,
- cortexm55,starmc1,cortexm85,
- cortexr52,cortexr52plus"
+ arm10e,xscale,fa606te,
+ fa626te,fmp626,fa726te,
+ arm926ejs,arm1026ejs,arm1136js,
+ arm1136jfs,arm1176jzs,arm1176jzfs,
+ mpcorenovfp,mpcore,arm1156t2s,
+ arm1156t2fs,cortexm1,cortexm0,
+ cortexm0plus,cortexm1smallmultiply,cortexm0smallmultiply,
+ cortexm0plussmallmultiply,genericv7a,cortexa5,
+ cortexa7,cortexa8,cortexa9,
+ cortexa12,cortexa15,cortexa17,
+ cortexr4,cortexr4f,cortexr5,
+ cortexr7,cortexr8,cortexm7,
+ cortexm4,cortexm3,marvell_pj4,
+ cortexa15cortexa7,cortexa17cortexa7,cortexa32,
+ cortexa35,cortexa53,cortexa57,
+ cortexa72,cortexa73,exynosm1,
+ xgene1,cortexa57cortexa53,cortexa72cortexa53,
+ cortexa73cortexa35,cortexa73cortexa53,cortexa55,
+ cortexa75,cortexa76,cortexa76ae,
+ cortexa77,cortexa78,cortexa78ae,
+ cortexa78c,cortexa710,cortexx1,
+ cortexx1c,neoversen1,cortexa75cortexa55,
+ cortexa76cortexa55,neoversev1,neoversen2,
+ cortexm23,cortexm33,cortexm35p,
+ cortexm52,cortexm55,starmc1,
+ cortexm85,cortexr52,cortexr52plus"
(const (symbol_ref "((enum attr_tune) arm_tune)")))
diff --git a/gcc/doc/sourcebuild.texi b/gcc/doc/sourcebuild.texi
index 65eeeccb264c..1c718c414129 100644
--- a/gcc/doc/sourcebuild.texi
+++ b/gcc/doc/sourcebuild.texi
@@ -2042,10 +2042,6 @@ ARM target uses emulated floating point operations.
ARM target supports @code{-mfpu=vfp -mfloat-abi=hard}.
Some multilibs may be incompatible with these options.
-@item arm_iwmmxt_ok
-ARM target supports @code{-mcpu=iwmmxt}.
-Some multilibs may be incompatible with this option.
-
@item arm_neon
ARM target supports generating NEON instructions.
diff --git a/gcc/testsuite/gcc.target/arm/ivopts.c
b/gcc/testsuite/gcc.target/arm/ivopts.c
index 582fdab7836d..6e3e74c2d567 100644
--- a/gcc/testsuite/gcc.target/arm/ivopts.c
+++ b/gcc/testsuite/gcc.target/arm/ivopts.c
@@ -12,5 +12,4 @@ tr5 (short array[], int n)
/* { dg-final { scan-tree-dump-times "PHI <" 1 "ivopts"} } */
/* { dg-final { object-size text <= 20 { target { arm_thumb2_no_arm_v8_1m_lob
} } } } */
-/* { dg-final { object-size text <= 32 { target { arm_nothumb && { !
arm_iwmmxt_ok } } } } } */
-/* { dg-final { object-size text <= 36 { target { arm_nothumb && arm_iwmmxt_ok
} } } } */
+/* { dg-final { object-size text <= 32 { target { arm_nothumb } } } } */
diff --git a/gcc/testsuite/lib/target-supports.exp
b/gcc/testsuite/lib/target-supports.exp
index 24d0b3d08e34..e0495d8437c9 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -7436,19 +7436,6 @@ proc check_effective_target_arm_softfloat { } {
}]
}
-# Return 1 if this is an ARM target supporting -mcpu=iwmmxt.
-# Some multilibs may be incompatible with this option.
-
-proc check_effective_target_arm_iwmmxt_ok { } {
- if { [check_effective_target_arm32] } {
- return [check_no_compiler_messages arm_iwmmxt_ok object {
- int dummy;
- } "-mcpu=iwmmxt"]
- } else {
- return 0
- }
-}
-
# Return true if LDRD/STRD instructions are prefered over LDM/STM instructions
# for an ARM target.
proc check_effective_target_arm_prefer_ldrd_strd { } {
