[ARM] Fix vcmp with #0.0

	* config/tc-arm.c (parse_ifimm_zero): New function.
	(enum operand_parse_code): Add OP_RSVD_FI0 value.
	(parse_operands): Handle OP_RSVD_FI0.
	(asm_opcode_insns): Use RSVD_FI0 for second operand of vcmp, vcmpe.

	* gas/arm/ual-vcmp.s: New file.
	* gas/arm/ual-vcmp.d: Likewise.
	* gas/arm/vcmp-zero-bad.s: Likewise.
	* gas/arm/vcmp-zero-bad.d: Likewise.
	* gas/arm/vcmp-zero-bad.l: Likewise.

6 files changed, 77 insertions, 0 deletions

diff --git a/gas/testsuite/ChangeLog b/gas/testsuite/ChangeLog
index 79aad54..ad41e0f 100644
--- a/gas/testsuite/ChangeLog
+++ b/gas/testsuite/ChangeLog
@@ -1,3 +1,11 @@
+2014-08-20  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
+	* gas/arm/ual-vcmp.s: New file.
+	* gas/arm/ual-vcmp.d: Likewise.
+	* gas/arm/vcmp-zero-bad.s: Likewise.
+	* gas/arm/vcmp-zero-bad.d: Likewise.
+	* gas/arm/vcmp-zero-bad.l: Likewise.
+
 2014-08-13  Mike Frysinger  <vapier@gentoo.org>
 
 	* gas/bfin/parallel_illegal.d: Add missing semicolons.
diff --git a/gas/testsuite/gas/arm/ual-vcmp.d b/gas/testsuite/gas/arm/ual-vcmp.d
new file mode 100644
index 0000000..2e9fb3d
--- /dev/null
+++ b/gas/testsuite/gas/arm/ual-vcmp.d
@@ -0,0 +1,24 @@
+#objdump: -dr --prefix-addresses --show-raw-insn
+#name: UAL vcmp with 0
+#as: -mfpu=vfpv3
+
+.*: +file format .*arm.*
+
+
+Disassembly of section .text:
+0+000 <[^>]*> eeb50a40 	vcmp.f32	s0, #0.0
+0+004 <[^>]*> eef50a40 	vcmp.f32	s1, #0.0
+0+008 <[^>]*> eef51ac0 	vcmpe.f32	s3, #0.0
+0+00c <[^>]*> eeb52ac0 	vcmpe.f32	s4, #0.0
+0+010 <[^>]*> eef52a40 	vcmp.f32	s5, #0.0
+0+014 <[^>]*> eeb53a40 	vcmp.f32	s6, #0.0
+0+018 <[^>]*> eef53ac0 	vcmpe.f32	s7, #0.0
+0+01c <[^>]*> eeb54ac0 	vcmpe.f32	s8, #0.0
+0+020 <[^>]*> eeb50b40 	vcmp.f64	d0, #0.0
+0+024 <[^>]*> eeb51b40 	vcmp.f64	d1, #0.0
+0+028 <[^>]*> eeb52bc0 	vcmpe.f64	d2, #0.0
+0+02c <[^>]*> eeb53bc0 	vcmpe.f64	d3, #0.0
+0+030 <[^>]*> eeb54b40 	vcmp.f64	d4, #0.0
+0+034 <[^>]*> eeb55b40 	vcmp.f64	d5, #0.0
+0+038 <[^>]*> eeb56bc0 	vcmpe.f64	d6, #0.0
+0+03c <[^>]*> eeb57bc0 	vcmpe.f64	d7, #0.0
\ No newline at end of file
diff --git a/gas/testsuite/gas/arm/ual-vcmp.s b/gas/testsuite/gas/arm/ual-vcmp.s
new file mode 100644
index 0000000..79efa4e
--- /dev/null
+++ b/gas/testsuite/gas/arm/ual-vcmp.s
@@ -0,0 +1,21 @@
+.text
+.arm
+.syntax unified
+
+vcmp.f32	s0, #0.0
+vcmp.f32	s1, #0
+vcmpe.f32	s3, #0.0
+vcmpe.f32	s4, #0
+vcmp.f32	s5, #0.0e2
+vcmp.f32	s6, #0e-3
+vcmpe.f32	s7, #0.0000
+vcmpe.f32	s8, #.0
+
+vcmp.f64	d0, #0.0
+vcmp.f64	d1, #0
+vcmpe.f64	d2, #0.0
+vcmpe.f64	d3, #0
+vcmp.f64	d4, #0.0e5
+vcmp.f64	d5, #0e-2
+vcmpe.f64	d6, #0.00
+vcmpe.f64	d7, #.0
diff --git a/gas/testsuite/gas/arm/vcmp-zero-bad.d b/gas/testsuite/gas/arm/vcmp-zero-bad.d
new file mode 100644
index 0000000..806cf00
--- /dev/null
+++ b/gas/testsuite/gas/arm/vcmp-zero-bad.d
@@ -0,0 +1,4 @@
+# name: UAL vcmp with #0.0 bad instructions.
+# as: -mfpu=vfpv3
+# source: vcmp-zero-bad.s
+# error-output: vcmp-zero-bad.l
diff --git a/gas/testsuite/gas/arm/vcmp-zero-bad.l b/gas/testsuite/gas/arm/vcmp-zero-bad.l
new file mode 100644
index 0000000..975d02b
--- /dev/null
+++ b/gas/testsuite/gas/arm/vcmp-zero-bad.l
@@ -0,0 +1,8 @@
+[^:]*: Assembler messages:
+[^:]*:5: Error: only floating point zero is allowed as immediate value -- `vcmp.f32 s0,#0.01'
+[^:]*:6: Error: only floating point zero is allowed as immediate value -- `vcmp.f32 s1,#2'
+[^:]*:7: Error: only floating point zero is allowed as immediate value -- `vcmpe.f32 s3,5'
+[^:]*:8: Error: only floating point zero is allowed as immediate value -- `vcmpe.f32 s4,#-0.0'
+[^:]*:10: Error: only floating point zero is allowed as immediate value -- `vcmp.f64 d0,#-1'
+[^:]*:11: Error: garbage following instruction -- `vcmpe.f64 d3,#0x35'
+[^:]*:12: Error: only floating point zero is allowed as immediate value -- `vcmpe.f64 d4,0xf'
diff --git a/gas/testsuite/gas/arm/vcmp-zero-bad.s b/gas/testsuite/gas/arm/vcmp-zero-bad.s
new file mode 100644
index 0000000..3be79cb
--- /dev/null
+++ b/gas/testsuite/gas/arm/vcmp-zero-bad.s
@@ -0,0 +1,12 @@
+.text
+.arm
+.syntax unified
+
+vcmp.f32        s0, #0.01
+vcmp.f32        s1, #2
+vcmpe.f32       s3, 5
+vcmpe.f32       s4, #-0.0
+
+vcmp.f64        d0, #-1
+vcmpe.f64       d3, #0x35
+vcmpe.f64       d4, 0xf