[Arm] Fix multilibs for Armv7-R

This patch maps multilibs using -march=armv7-r+vfpv3-d16-fp16 and
-march=armv7-r+vfpv3-d16-fp16+idiv to v7+fp.  This patch also adds a new
multilib for armv7-r+fp.sp and maps -march=armv7-r+fp.sp+idiv,
-march=armv7-r+vfpv3xd-fp16 and -march=armv7-r+vfpv3xd-fp16+idiv to it.

This patch also makes it so that the generated multilib header file is
regenerated if changes have been made to either t-multilib, t-aprofile or
t-rmprofile when doing incremental builds.

gcc/ChangeLog:
2019-10-18  Andre Vieira  <andre.simoesdiasvieira@arm.com>

	* config/arm/t-multilib: Add rule to regenerate mutlilib header file
	with any change to t-multilib, t-aprofile and t-rmprofile.  Also add
	new multilib variants and new mappings.

gcc/testsuite/ChangeLog:
2019-10-18  Andre Vieira  <andre.simoesdiasvieira@arm.com>

	* gcc.target/arm/multilib.exp: Add extra tests.

From-SVN: r277156

4 files changed, 53 insertions, 8 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2f4906e..dda2718 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2019-10-18  Andre Vieira  <andre.simoesdiasvieira@arm.com>
+
+	* config/arm/t-multilib: Add rule to regenerate mutlilib header file
+	with any change to t-multilib, t-aprofile and t-rmprofile.  Also add
+	new multilib variants and new mappings.
+
 2019-10-18  Georg-Johann Lay  <avr@gjlay.de>
 
 	PR target/86040
diff --git a/gcc/config/arm/t-multilib b/gcc/config/arm/t-multilib
index 0852630..dc97c8f 100644
--- a/gcc/config/arm/t-multilib
+++ b/gcc/config/arm/t-multilib
@@ -24,6 +24,8 @@
 # values during the configure step.  We enforce this during the
 # top-level configury.
 
+s-mlib: $(srcdir)/config/arm/t-multilib $(srcdir)/config/arm/t-aprofile $(srcdir)/config/arm/t-rmprofile
+
 MULTILIB_OPTIONS     =
 MULTILIB_DIRNAMES    =
 MULTILIB_EXCEPTIONS  =
@@ -63,6 +65,8 @@ all_early_arch		:= armv5tej armv6 armv6j armv6k armv6z armv6kz \
 v7_a_arch_variants	:= $(call all_feat_combs, mp sec)
 v7_a_nosimd_variants	:= +fp +vfpv3 +vfpv3-d16-fp16 +vfpv3-fp16 +vfpv4-d16 +vfpv4
 v7_a_simd_variants	:= +simd +neon-fp16 +neon-vfpv4
+v7_r_sp_variants	:= +fp.sp +fp.sp+idiv +vfpv3xd-fp16 +vfpv3xd-fp16+idiv
+v7_r_dp_variants	:= +fp +fp+idiv +vfpv3-d16-fp16 +vfpv3-d16-fp16+idiv
 v7ve_nosimd_variants	:= +vfpv3-d16 +vfpv3 +vfpv3-d16-fp16 +vfpv3-fp16 +fp +vfpv4
 v7ve_vfpv3_simd_variants := +neon +neon-fp16
 v7ve_vfpv4_simd_variants := +simd
@@ -86,8 +90,8 @@ SEP := $(and $(HAS_APROFILE),$(HAS_RMPROFILE),/)
 MULTILIB_OPTIONS	+= marm/mthumb
 MULTILIB_DIRNAMES	+= arm thumb
 
-MULTILIB_OPTIONS	+= march=armv5te+fp/march=armv7/march=armv7+fp/$(MULTI_ARCH_OPTS_A)$(SEP)$(MULTI_ARCH_OPTS_RM)
-MULTILIB_DIRNAMES	+= v5te v7 v7+fp $(MULTI_ARCH_DIRS_A) $(MULTI_ARCH_DIRS_RM)
+MULTILIB_OPTIONS	+= march=armv5te+fp/march=armv7/march=armv7+fp/march=armv7-r+fp.sp/$(MULTI_ARCH_OPTS_A)$(SEP)$(MULTI_ARCH_OPTS_RM)
+MULTILIB_DIRNAMES	+= v5te v7 v7+fp v7-r+fp.sp $(MULTI_ARCH_DIRS_A) $(MULTI_ARCH_DIRS_RM)
 
 MULTILIB_OPTIONS	+= mfloat-abi=soft/mfloat-abi=softfp/mfloat-abi=hard
 MULTILIB_DIRNAMES	+= nofp softfp hard
@@ -100,22 +104,31 @@ MULTILIB_REQUIRED	+= mthumb/march=armv7/mfloat-abi=soft
 MULTILIB_REQUIRED	+= mthumb/march=armv7+fp/mfloat-abi=softfp
 MULTILIB_REQUIRED	+= mthumb/march=armv7+fp/mfloat-abi=hard
 
-# Map v7-r down onto common v7 code.
+MULTILIB_REQUIRED	+= mthumb/march=armv7-r+fp.sp/mfloat-abi=softfp
+MULTILIB_REQUIRED	+= mthumb/march=armv7-r+fp.sp/mfloat-abi=hard
+
+# Map v7-r with double precision down onto common v7 code.
 MULTILIB_MATCHES	+= march?armv7=march?armv7-r
 MULTILIB_MATCHES	+= march?armv7=march?armv7-r+idiv
-MULTILIB_MATCHES	+= march?armv7+fp=march?armv7-r+fp
-MULTILIB_MATCHES	+= march?armv7+fp=march?armv7-r+fp+idiv
+MULTILIB_MATCHES	+= $(foreach ARCH, $(v7_r_dp_variants), \
+			     march?armv7+fp=march?armv7-r$(ARCH))
+
+# Map v7-r single precision variants to v7-r with single precision.
+MULTILIB_MATCHES	+= $(foreach ARCH, \
+			     $(filter-out +fp.sp, $(v7_r_sp_variants)), \
+			     march?armv7-r+fp.sp=march?armv7-r$(ARCH))
 
 MULTILIB_MATCHES	+= $(foreach ARCH, $(all_early_arch), \
 			     march?armv5te+fp=march?$(ARCH)+fp)
-# Map v8-r down onto common v7 code.
+# Map v8-r down onto common v7 code or v7-r sp.
 MULTILIB_MATCHES	+= march?armv7=march?armv8-r
 MULTILIB_MATCHES	+= $(foreach ARCH, $(v8_r_nosimd_variants), \
 			     march?armv7=march?armv8-r$(ARCH))
 MULTILIB_MATCHES	+= $(foreach ARCH,+simd +crypto, \
 			     march?armv7+fp=march?armv8-r$(ARCH) \
 			     march?armv7+fp=march?armv8-r+crc$(ARCH))
-
+MULTILIB_MATCHES	+= march?armv7-r+fp.sp=march?armv8-r+fp.sp
+MULTILIB_MATCHES	+= march?armv7-r+fp.sp=march?armv8-r+crc+fp.sp
 
 ifeq (,$(HAS_APROFILE))
 # Map all v7-a
@@ -177,7 +190,7 @@ MULTILIB_MATCHES	+= $(foreach ARCH, $(v8_5_a_simd_variants), \
 MULTILIB_REUSE		+= mthumb/march.armv7/mfloat-abi.soft=marm/march.armv7/mfloat-abi.soft
 
 MULTILIB_REUSE		+= $(foreach ABI, hard softfp, \
-			     $(foreach ARCH, armv7+fp, \
+			     $(foreach ARCH, armv7+fp armv7-r+fp\.sp, \
 			       mthumb/march.$(ARCH)/mfloat-abi.$(ABI)=marm/march.$(ARCH)/mfloat-abi.$(ABI)))
 
 # Softfp but no FP, use the soft-float libraries.
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 4e817eb..7d427a9 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2019-10-18  Andre Vieira  <andre.simoesdiasvieira@arm.com>
+
+	* gcc.target/arm/multilib.exp: Add extra tests.
+
 2019-10-18  Tobias Burnus  <tobias@codesourcery.com>
 
 	PR fortran/91586
diff --git a/gcc/testsuite/gcc.target/arm/multilib.exp b/gcc/testsuite/gcc.target/arm/multilib.exp
index d82306e..dcea829 100644
--- a/gcc/testsuite/gcc.target/arm/multilib.exp
+++ b/gcc/testsuite/gcc.target/arm/multilib.exp
@@ -753,6 +753,28 @@ if {[multilib_config "rmprofile"] } {
 	{-march=armv8-m.main+fp.dp -mfpu=fpv5-d16 -mfloat-abi=softfp} "thumb/v8-m.main+dp/softfp"
 	{-march=armv8-m.main+fp+dsp -mfpu=fpv5-d16 -mfloat-abi=softfp} "thumb/v8-m.main+dp/softfp"
 	{-march=armv8-m.main+fp.dp+dsp -mfpu=fpv5-d16 -mfloat-abi=softfp} "thumb/v8-m.main+dp/softfp"
+	{-march=armv7-r+fp -mfpu=auto -mfloat-abi=softfp} "thumb/v7+fp/softfp"
+	{-march=armv7-r+fp -mfpu=auto -mfloat-abi=hard} "thumb/v7+fp/hard"
+	{-march=armv7-r+fp+idiv -mfpu=auto -mfloat-abi=softfp} "thumb/v7+fp/softfp"
+	{-march=armv7-r+fp+idiv -mfpu=auto -mfloat-abi=hard} "thumb/v7+fp/hard"
+	{-march=armv7-r+vfpv3-d16-fp16 -mfpu=auto -mfloat-abi=softfp} "thumb/v7+fp/softfp"
+	{-march=armv7-r+vfpv3-d16-fp16 -mfpu=auto -mfloat-abi=hard} "thumb/v7+fp/hard"
+	{-march=armv7-r+vfpv3-d16-fp16+idiv -mfpu=auto -mfloat-abi=softfp} "thumb/v7+fp/softfp"
+	{-march=armv7-r+vfpv3-d16-fp16+idiv -mfpu=auto -mfloat-abi=hard} "thumb/v7+fp/hard"
+	{-march=armv7-r+fp.sp -mfpu=auto -mfloat-abi=softfp} "thumb/v7-r+fp.sp/softfp"
+	{-march=armv7-r+fp.sp -mfpu=auto -mfloat-abi=hard} "thumb/v7-r+fp.sp/hard"
+	{-march=armv7-r+fp.sp+idiv -mfpu=auto -mfloat-abi=softfp} "thumb/v7-r+fp.sp/softfp"
+	{-march=armv7-r+fp.sp+idiv -mfpu=auto -mfloat-abi=hard} "thumb/v7-r+fp.sp/hard"
+	{-march=armv7-r+vfpv3xd -mfpu=auto -mfloat-abi=softfp} "thumb/v7-r+fp.sp/softfp"
+	{-march=armv7-r+vfpv3xd -mfpu=auto -mfloat-abi=hard} "thumb/v7-r+fp.sp/hard"
+	{-march=armv7-r+vfpv3xd+idiv -mfpu=auto -mfloat-abi=softfp} "thumb/v7-r+fp.sp/softfp"
+	{-march=armv7-r+vfpv3xd+idiv -mfpu=auto -mfloat-abi=hard} "thumb/v7-r+fp.sp/hard"
+	{-march=armv7-r+vfpv3xd-fp16+idiv -mfpu=auto -mfloat-abi=softfp} "thumb/v7-r+fp.sp/softfp"
+	{-march=armv7-r+vfpv3xd-fp16+idiv -mfpu=auto -mfloat-abi=hard} "thumb/v7-r+fp.sp/hard"
+	{-march=armv8-r+fp.sp -mfpu=auto -mfloat-abi=softfp} "thumb/v7-r+fp.sp/softfp"
+	{-march=armv8-r+fp.sp -mfpu=auto -mfloat-abi=hard} "thumb/v7-r+fp.sp/hard"
+	{-march=armv8-r+crc+fp.sp -mfpu=auto -mfloat-abi=softfp} "thumb/v7-r+fp.sp/softfp"
+	{-march=armv8-r+crc+fp.sp -mfpu=auto -mfloat-abi=hard} "thumb/v7-r+fp.sp/hard"
     } {
 	check_multi_dir $opts $dir
     }