[Patch 7/7, Arm, GCC] Introduce multilibs for PACBTI target feature.

[Tejas Belagod via Gcc-patches]

Hi,

This patch adds a multilib for pacbti target feature.

Tested on arm-none-eabi. OK for trunk?

2021-10-04  Tejas Belagod  <tbela...@arm.com>

gcc/ChangeLog:

        * config/arm/t-rmprofile: Add multilib rules for +pacbti.

diff --git a/gcc/config/arm/t-rmprofile b/gcc/config/arm/t-rmprofile
index 
a6036bf0a5191a3cac3bfbe2329783204d5c3ef4..241bf1939e30ae7890ae332556d33759f538ced5
 100644
--- a/gcc/config/arm/t-rmprofile
+++ b/gcc/config/arm/t-rmprofile
@@ -27,8 +27,8 @@
 
 # Arch and FPU variants to build libraries with
 
-MULTI_ARCH_OPTS_RM     = 
march=armv6s-m/march=armv7-m/march=armv7e-m/march=armv7e-m+fp/march=armv7e-m+fp.dp/march=armv8-m.base/march=armv8-m.main/march=armv8-m.main+fp/march=armv8-m.main+fp.dp/march=armv8.1-m.main+mve
-MULTI_ARCH_DIRS_RM     = v6-m v7-m v7e-m v7e-m+fp v7e-m+dp v8-m.base v8-m.main 
v8-m.main+fp v8-m.main+dp v8.1-m.main+mve
+MULTI_ARCH_OPTS_RM     = 
march=armv6s-m/march=armv7-m/march=armv7e-m/march=armv7e-m+fp/march=armv7e-m+fp.dp/march=armv8-m.base/march=armv8-m.main/march=armv8-m.main+fp/march=armv8-m.main+fp.dp/march=armv8.1-m.main+mve/march=armv8.1-m.main+pacbti
+MULTI_ARCH_DIRS_RM     = v6-m v7-m v7e-m v7e-m+fp v7e-m+dp v8-m.base v8-m.main 
v8-m.main+fp v8-m.main+dp v8.1-m.main+mve v8.1-m.main+pacbti
 
 # Base M-profile (no fp)
 MULTILIB_REQUIRED      += mthumb/march=armv6s-m/mfloat-abi=soft
@@ -36,6 +36,7 @@ MULTILIB_REQUIRED     += mthumb/march=armv7-m/mfloat-abi=soft
 MULTILIB_REQUIRED      += mthumb/march=armv7e-m/mfloat-abi=soft
 MULTILIB_REQUIRED      += mthumb/march=armv8-m.base/mfloat-abi=soft
 MULTILIB_REQUIRED      += mthumb/march=armv8-m.main/mfloat-abi=soft
+MULTILIB_REQUIRED      += mthumb/march=armv8.1-m.main+pacbti/mfloat-abi=soft
 
 # ARMv7e-M with FP (single and double precision variants)
 MULTILIB_REQUIRED      += mthumb/march=armv7e-m+fp/mfloat-abi=hard
@@ -93,3 +94,4 @@ MULTILIB_MATCHES      += 
march?armv8-m.main=mlibarch?armv8-m.main
 MULTILIB_MATCHES       += march?armv8-m.main+fp=mlibarch?armv8-m.main+fp
 MULTILIB_MATCHES       += march?armv8-m.main+fp.dp=mlibarch?armv8-m.main+fp.dp
 MULTILIB_MATCHES       += march?armv8.1-m.main+mve=mlibarch?armv8.1-m.main+mve
+MULTILIB_MATCHES       += 
march?armv8.1-m.main+pacbti=mlibarch?armv8.1-m.main+pacbti