gas,arm: Support case incensitive VLDR/VSTR SYSREG

[Andre Vieira (lists)]

To be consistent with VMRS/VMSR this changes VLDR/VSTR SYSREG to support 
case insensitive system register operands.

Regression tested on arm-none-eabi.

OK for trunk?
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diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c
index 217864bc09bfa6dd228ed608289646dfee5b1f60..482b1c8ecc00a36e21100b9e0a00d11973f6e34d 100644
--- a/gas/config/tc-arm.c
+++ b/gas/config/tc-arm.c
@@ -6416,19 +6416,15 @@ parse_sys_vldr_vstr (char **str)
     {"P0",		0x5, 0x1},
     {"FPCXTNS",		0x6, 0x1},
     {"FPCXT_NS",	0x6, 0x1},
-    {"fpcxtns",		0x6, 0x1},
-    {"fpcxt_ns",	0x6, 0x1},
     {"FPCXTS",		0x7, 0x1},
     {"FPCXT_S",		0x7, 0x1},
-    {"fpcxts",		0x7, 0x1},
-    {"fpcxt_s",		0x7, 0x1}
   };
   char *op_end = strchr (*str, ',');
   size_t op_strlen = op_end - *str;
 
   for (i = 0; i < sizeof (sysregs) / sizeof (sysregs[0]); i++)
     {
-      if (!strncmp (*str, sysregs[i].name, op_strlen))
+      if (!strncasecmp (*str, sysregs[i].name, op_strlen))
 	{
 	  val = sysregs[i].regl | (sysregs[i].regh << 3);
 	  *str = op_end;
diff --git a/gas/testsuite/gas/arm/archv8m_1m-cmse-main.d b/gas/testsuite/gas/arm/archv8m_1m-cmse-main.d
index 1ed543a04e8602a0c6dfed28c0ec6ae455722af0..b451258808d8fdcea052b5a63c50cdfd3c420b72 100644
--- a/gas/testsuite/gas/arm/archv8m_1m-cmse-main.d
+++ b/gas/testsuite/gas/arm/archv8m_1m-cmse-main.d
@@ -54,4 +54,38 @@ Disassembly of section .text:
 0+.* <[^>]*> edc3 ef80 	vstr	FPCXTS, \[r3\]
 0+.* <[^>]*> bfa8      	it	ge
 0+.* <[^>]*> edc3 ef80 	vstrge	FPCXTS, \[r3\]
+0+.* <[^>]*> ed92 2f80 	vldr	FPSCR, \[r2\]
+0+.* <[^>]*> ed92 2f82 	vldr	FPSCR, \[r2, #8\]
+0+.* <[^>]*> ed92 2f82 	vldr	FPSCR, \[r2, #8\]
+0+.* <[^>]*> ed12 2f82 	vldr	FPSCR, \[r2, #-8\]
+0+.* <[^>]*> edb2 2f82 	vldr	FPSCR, \[r2, #8\]!
+0+.* <[^>]*> edb2 2f82 	vldr	FPSCR, \[r2, #8\]!
+0+.* <[^>]*> ed32 2f82 	vldr	FPSCR, \[r2, #-8\]!
+0+.* <[^>]*> ecb2 2f82 	vldr	FPSCR, \[r2\], #8
+0+.* <[^>]*> ecb2 2f82 	vldr	FPSCR, \[r2\], #8
+0+.* <[^>]*> ec32 2f82 	vldr	FPSCR, \[r2\], #-8
+0+.* <[^>]*> ed93 4f80 	vldr	FPSCR_nzcvqc, \[r3\]
+0+.* <[^>]*> edd3 8f80 	vldr	VPR, \[r3\]
+0+.* <[^>]*> edd3 af80 	vldr	P0, \[r3\]
+0+.* <[^>]*> edd3 cf80 	vldr	FPCXTNS, \[r3\]
+0+.* <[^>]*> edd3 ef80 	vldr	FPCXTS, \[r3\]
+0+.* <[^>]*> bfa8      	it	ge
+0+.* <[^>]*> edd3 ef80 	vldrge	FPCXTS, \[r3\]
+0+.* <[^>]*> ed82 2f80 	vstr	FPSCR, \[r2\]
+0+.* <[^>]*> ed82 2f82 	vstr	FPSCR, \[r2, #8\]
+0+.* <[^>]*> ed82 2f82 	vstr	FPSCR, \[r2, #8\]
+0+.* <[^>]*> ed02 2f82 	vstr	FPSCR, \[r2, #-8\]
+0+.* <[^>]*> eda2 2f82 	vstr	FPSCR, \[r2, #8\]!
+0+.* <[^>]*> eda2 2f82 	vstr	FPSCR, \[r2, #8\]!
+0+.* <[^>]*> ed22 2f82 	vstr	FPSCR, \[r2, #-8\]!
+0+.* <[^>]*> eca2 2f82 	vstr	FPSCR, \[r2\], #8
+0+.* <[^>]*> eca2 2f82 	vstr	FPSCR, \[r2\], #8
+0+.* <[^>]*> ec22 2f82 	vstr	FPSCR, \[r2\], #-8
+0+.* <[^>]*> ed83 4f80 	vstr	FPSCR_nzcvqc, \[r3\]
+0+.* <[^>]*> edc3 8f80 	vstr	VPR, \[r3\]
+0+.* <[^>]*> edc3 af80 	vstr	P0, \[r3\]
+0+.* <[^>]*> edc3 cf80 	vstr	FPCXTNS, \[r3\]
+0+.* <[^>]*> edc3 ef80 	vstr	FPCXTS, \[r3\]
+0+.* <[^>]*> bfa8      	it	ge
+0+.* <[^>]*> edc3 ef80 	vstrge	FPCXTS, \[r3\]
 #...
diff --git a/gas/testsuite/gas/arm/archv8m_1m-cmse-main.s b/gas/testsuite/gas/arm/archv8m_1m-cmse-main.s
index 9a20e1e4fe7ab1e497d83da13f288f1efcfc6a0c..402f4ee2e552f981988f4e7325bb8e0f0b130f0a 100644
--- a/gas/testsuite/gas/arm/archv8m_1m-cmse-main.s
+++ b/gas/testsuite/gas/arm/archv8m_1m-cmse-main.s
@@ -52,3 +52,37 @@ vstr P0,  [r3] @ Accepts P0 system register
 vstr FPCXTNS, [r3] @ Accepts FPCXTNS system register
 vstr FPCXTS, [r3] @ Accepts FPCXTS system register
 vstrge FPCXTS, [r3] @ Accepts conditional execution
+
+vldr fpscr, [r2] @ Accepts offset variant without immediate
+vldr fpscr, [r2, #8] @ Likewise but with immediate without sign
+vldr fpscr, [r2, #+8] @ Likewise but with positive sign
+vldr fpscr, [r2, #-8] @ Likewise but with negative sign
+vldr fpscr, [r2, #8]! @ Accepts pre-index variant with immediate without sign
+vldr fpscr, [r2, #+8]! @ Likewise but with positive sign
+vldr fpscr, [r2, #-8]! @ Likewise but with negative sign
+vldr fpscr, [r2], #8 @ Accepts post-index variant with immediate without sign
+vldr fpscr, [r2], #+8 @ Likewise but with positive sign
+vldr fpscr, [r2], #-8 @ Likewise but with negative sign
+vldr fpscr_nzcvqc, [r3] @ Accepts FPSCR_nzcvqc system register
+vldr vpr, [r3] @ Accepts VPR system register
+vldr p0,  [r3] @ Accepts P0 system register
+vldr fpcxtns, [r3] @ Accepts FPCXTNS system register
+vldr fpcxts, [r3] @ Accepts FPCXTS system register
+vldrge fpcxts, [r3] @ Accepts conditional execution
+
+vstr fpscr, [r2] @ Accepts offset variant without immediate
+vstr fpscr, [r2, #8] @ Likewise but with immediate without sign
+vstr fpscr, [r2, #+8] @ Likewise but with positive sign
+vstr fpscr, [r2, #-8] @ Likewise but with negative sign
+vstr fpscr, [r2, #8]! @ Accepts pre-index variant with immediate without sign
+vstr fpscr, [r2, #+8]! @ Likewise but with positive sign
+vstr fpscr, [r2, #-8]! @ Likewise but with negative sign
+vstr fpscr, [r2], #8 @ Accepts post-index variant with immediate without sign
+vstr fpscr, [r2], #+8 @ Likewise but with positive sign
+vstr fpscr, [r2], #-8 @ Likewise but with negative sign
+vstr fpscr_nzcvqc, [r3] @ Accepts FPSCR_nzcvqc system register
+vstr vpr, [r3] @ Accepts VPR system register
+vstr p0,  [r3] @ Accepts P0 system register
+vstr fpcxtns, [r3] @ Accepts FPCXTNS system register
+vstr fpcxts, [r3] @ Accepts FPCXTS system register
+vstrge fpcxts, [r3] @ Accepts conditional execution