ARM: fix more cases where predication may or may not be allowed

Unfortunately this addresses two issues (by the time I'd disentangled the logic
it wasn't worth putting it back to half-broken):

+ Coprocessor instructions should all be predicable in Thumb mode.
+ BKPT should never be predicable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184965 91177308-0d34-0410-b5e6-96231b3b80d8

4 files changed, 65 insertions, 0 deletions

diff --git a/test/MC/ARM/basic-arm-instructions.s b/test/MC/ARM/basic-arm-instructions.s
index 3061c0f..a7c54ff 100644
--- a/test/MC/ARM/basic-arm-instructions.s
+++ b/test/MC/ARM/basic-arm-instructions.s
@@ -465,6 +465,8 @@ Lforward:
 @ CHECK: cdp2  p7, #1, c1, c1, c1, #4    @ encoding: [0x81,0x17,0x11,0xfe]
 @ CHECK: cdp2  p10, #0, c6, c12, c0, #7   @ encoding: [0xe0,0x6a,0x0c,0xfe]
 
+        cdpne  p7, #1, c1, c1, c1, #4
+@ CHECK: cdpne  p7, #1, c1, c1, c1, #4     @ encoding: [0x81,0x17,0x11,0x1e]
 
 @------------------------------------------------------------------------------
 @ CLREX
@@ -969,6 +971,9 @@ Lforward:
 @ CHECK: mcr  p7, #1, r5, c1, c1, #4    @ encoding: [0x91,0x57,0x21,0xee]
 @ CHECK: mcr2  p7, #1, r5, c1, c1, #4   @ encoding: [0x91,0x57,0x21,0xfe]
 
+        mcrls  p7, #1, r5, c1, c1, #4
+@ CHECK: mcrls  p7, #1, r5, c1, c1, #4   @ encoding: [0x91,0x57,0x21,0x9e]
+
 @------------------------------------------------------------------------------
 @ MCRR/MCRR2
 @------------------------------------------------------------------------------
@@ -978,6 +983,8 @@ Lforward:
 @ CHECK: mcrr  p7, #15, r5, r4, c1      @ encoding: [0xf1,0x57,0x44,0xec]
 @ CHECK: mcrr2  p7, #15, r5, r4, c1     @ encoding: [0xf1,0x57,0x44,0xfc]
 
+        mcrrgt  p7, #15, r5, r4, c1
+@ CHECK: mcrrgt  p7, #15, r5, r4, c1     @ encoding: [0xf1,0x57,0x44,0xcc]
 
 @------------------------------------------------------------------------------
 @ MLA
@@ -1081,6 +1088,9 @@ Lforward:
 @ CHECK: mrc2  p10, #7, apsr_nzcv, c15, c0, #1    @ encoding: [0x30,0xfa,0xff,0xfe]
 @ CHECK: mrc2  p10, #7, pc, c15, c0, #1           @ encoding: [0x30,0xfa,0xff,0xfe]
 
+        mrceq  p15, #7, pc, c15, c6, #6
+@ CHECK: mrceq  p15, #7, pc, c15, c6, #6            @ encoding: [0xd6,0xff,0xff,0x0e]
+
 @------------------------------------------------------------------------------
 @ MRRC/MRRC2
 @------------------------------------------------------------------------------
@@ -1090,6 +1100,8 @@ Lforward:
 @ CHECK: mrrc  p7, #1, r5, r4, c1       @ encoding: [0x11,0x57,0x54,0xec]
 @ CHECK: mrrc2  p7, #1, r5, r4, c1      @ encoding: [0x11,0x57,0x54,0xfc]
 
+        mrrclo  p7, #1, r5, r4, c1
+@ CHECK: mrrclo  p7, #1, r5, r4, c1      @ encoding: [0x11,0x57,0x54,0x3c]
 
 @------------------------------------------------------------------------------
 @ MRS
diff --git a/test/MC/ARM/diagnostics.s b/test/MC/ARM/diagnostics.s
index 21fda1c..1aea117 100644
--- a/test/MC/ARM/diagnostics.s
+++ b/test/MC/ARM/diagnostics.s
@@ -393,3 +393,17 @@
 @ CHECK-ERRORS: error: instruction 'dmb' is not predicable, but condition code specified
 @ CHECK-ERRORS: error: instruction 'dsb' is not predicable, but condition code specified
 @ CHECK-ERRORS: error: instruction 'isb' is not predicable, but condition code specified
+
+        mcr2le  p7, #1, r5, c1, c1, #4
+        mcrr2ne p7, #15, r5, r4, c1
+        mrc2lo  p14, #0, r1, c1, c2, #4
+        mrrc2lo  p7, #1, r5, r4, c1
+        cdp2hi   p10, #0, c6, c12, c0, #7
+@ CHECK-ERRORS: error: instruction 'mcr2' is not predicable, but condition code specified
+@ CHECK-ERRORS: error: instruction 'mcrr2' is not predicable, but condition code specified
+@ CHECK-ERRORS: error: instruction 'mrc2' is not predicable, but condition code specified
+@ CHECK-ERRORS: error: instruction 'mrrc2' is not predicable, but condition code specified
+@ CHECK-ERRORS: error: instruction 'cdp2' is not predicable, but condition code specified
+
+        bkpteq #7
+@ CHECK-ERRORS: error: instruction 'bkpt' is not predicable, but condition code specified
diff --git a/test/MC/ARM/thumb-only-conditionals.s b/test/MC/ARM/thumb-only-conditionals.s
index 55b2cf4..6d13ce5 100644
--- a/test/MC/ARM/thumb-only-conditionals.s
+++ b/test/MC/ARM/thumb-only-conditionals.s
@@ -17,3 +17,38 @@
 @ CHECK-NEXT: dmble sy
 @ CHECK-NEXT: dsbgt sy
 @ CHECK-NEXT: isble sy
+
+        itt gt
+        cdpgt  p7, #1, c1, c1, c1, #4
+        cdp2gt  p7, #1, c1, c1, c1, #4
+@ CHECK: itt gt
+@ CHECK-NEXT: cdpgt  p7, #1, c1, c1, c1, #4
+@ CHECK-NEXT: cdp2gt  p7, #1, c1, c1, c1, #4
+
+        itt ne
+        mcrne p0, #0, r0, c0, c0, #0
+        mcr2ne p0, #0, r0, c0, c0, #0
+@ CHECK: itt ne
+@ CHECK-NEXT: mcrne p0, #0, r0, c0, c0, #0
+@ CHECK-NEXT: mcr2ne p0, #0, r0, c0, c0, #0
+
+        ite le
+        mcrrle  p7, #15, r5, r4, c1
+        mcrr2gt  p7, #15, r5, r4, c1
+@ CHECK: ite le
+@ CHECK-NEXT: mcrrle  p7, #15, r5, r4, c1
+@ CHECK-NEXT: mcrr2gt  p7, #15, r5, r4, c1
+
+        ite eq
+        mrceq p11, #1, r1, c2, c2
+        mrc2ne p12, #3, r3, c3, c4
+@ CHECK: ite eq
+@ CHECK-NEXT: mrceq p11, #1, r1, c2, c2
+@ CHECK-NEXT: mrc2ne p12, #3, r3, c3, c4
+
+        itt lo
+        mrrclo  p7, #1, r5, r4, c1
+        mrrc2lo  p7, #1, r5, r4, c1
+@ CHECK: itt lo
+@ CHECK-NEXT: mrrclo  p7, #1, r5, r4, c1
+@ CHECK-NEXT: mrrc2lo  p7, #1, r5, r4, c1
diff --git a/test/MC/ARM/thumb2-diagnostics.s b/test/MC/ARM/thumb2-diagnostics.s
index b7fe44d..e1c0058 100644
--- a/test/MC/ARM/thumb2-diagnostics.s
+++ b/test/MC/ARM/thumb2-diagnostics.s
@@ -47,3 +47,7 @@
         isb  #16
 @ CHECK-ERRORS: error: immediate value out of range
 @ CHECK-ERRORS: error: immediate value out of range
+
+        itt eq
+        bkpteq #1
+@ CHECK-ERRORS: error: instruction 'bkpt' is not predicable, but condition code specified