[PowerPC] Add asm support for cache-inhibited ld/st instructions

Add assembler support for the fixed-point cache-inhibited load/store
instructions. These are hypervisor-level only, so don't get too excited ;)

Fixes PR21650.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222976 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/PowerPC/PPCInstrInfo.td

@@ -3234,6 +3234,24 @@ def MTDCR : XFXForm_1<31, 451, (outs), (ins gprc:$RT, i32imm:$SPR),
 
 def ATTN : XForm_attn<0, 256, (outs), (ins), "attn", IIC_BrB>;
 
+def LBZCIX : XForm_base_r3xo<31, 853, (outs gprc:$RST), (ins gprc:$A, gprc:$B),
+                             "lbzcix $RST, $A, $B", IIC_LdStLoad, []>;
+def LHZCIX : XForm_base_r3xo<31, 821, (outs gprc:$RST), (ins gprc:$A, gprc:$B),
+                             "lhzcix $RST, $A, $B", IIC_LdStLoad, []>;
+def LWZCIX : XForm_base_r3xo<31, 789, (outs gprc:$RST), (ins gprc:$A, gprc:$B),
+                             "lwzcix $RST, $A, $B", IIC_LdStLoad, []>;
+def LDCIX :  XForm_base_r3xo<31, 885, (outs gprc:$RST), (ins gprc:$A, gprc:$B),
+                             "ldcix $RST, $A, $B", IIC_LdStLoad, []>;
+
+def STBCIX : XForm_base_r3xo<31, 981, (outs), (ins gprc:$RST, gprc:$A, gprc:$B),
+                             "stbcix $RST, $A, $B", IIC_LdStLoad, []>;
+def STHCIX : XForm_base_r3xo<31, 949, (outs), (ins gprc:$RST, gprc:$A, gprc:$B),
+                             "sthcix $RST, $A, $B", IIC_LdStLoad, []>;
+def STWCIX : XForm_base_r3xo<31, 917, (outs), (ins gprc:$RST, gprc:$A, gprc:$B),
+                             "stwcix $RST, $A, $B", IIC_LdStLoad, []>;
+def STDCIX : XForm_base_r3xo<31, 1013, (outs), (ins gprc:$RST, gprc:$A, gprc:$B),
+                             "stdcix $RST, $A, $B", IIC_LdStLoad, []>;
+
 //===----------------------------------------------------------------------===//
 // PowerPC Assembler Instruction Aliases
 //

test/MC/Disassembler/PowerPC/ppc64-encoding-ext.txt

@@ -2275,6 +2275,23 @@
 # CHECK: rfid
 0x4c 0x00 0x00 0x24
 
+# CHECK: lbzcix 21, 5, 7
+0x7e 0xa5 0x3e 0xaa
+# CHECK: lhzcix 21, 5, 7
+0x7e 0xa5 0x3e 0x6a
+# CHECK: lwzcix 21, 5, 7
+0x7e 0xa5 0x3e 0x2a
+# CHECK: ldcix  21, 5, 7
+0x7e 0xa5 0x3e 0xea
+# CHECK: stbcix 21, 5, 7
+0x7e 0xa5 0x3f 0xaa
+# CHECK: sthcix 21, 5, 7
+0x7e 0xa5 0x3f 0x6a
+# CHECK: stwcix 21, 5, 7
+0x7e 0xa5 0x3f 0x2a
+# CHECK: stdcix 21, 5, 7
+0x7e 0xa5 0x3f 0xea
+
 # CHECK: attn
 0x00 0x00 0x02 0x00
 

test/MC/PowerPC/ppc64-encoding-ext.s

@@ -3634,6 +3634,33 @@
 # CHECK-LE: mtspr 280, 2                     # encoding: [0xa6,0x43,0x58,0x7c]
             mtasr 2
 
+# Load and Store Caching Inhibited Instructions
+# CHECK-BE: lbzcix 21, 5, 7                  # encoding: [0x7e,0xa5,0x3e,0xaa]
+# CHECK-LE: lbzcix 21, 5, 7                  # encoding: [0xaa,0x3e,0xa5,0x7e]
+            lbzcix 21, 5, 7
+# CHECK-BE: lhzcix 21, 5, 7                  # encoding: [0x7e,0xa5,0x3e,0x6a]
+# CHECK-LE: lhzcix 21, 5, 7                  # encoding: [0x6a,0x3e,0xa5,0x7e]
+            lhzcix 21, 5, 7
+# CHECK-BE: lwzcix 21, 5, 7                  # encoding: [0x7e,0xa5,0x3e,0x2a]
+# CHECK-LE: lwzcix 21, 5, 7                  # encoding: [0x2a,0x3e,0xa5,0x7e]
+            lwzcix 21, 5, 7
+# CHECK-BE: ldcix  21, 5, 7                  # encoding: [0x7e,0xa5,0x3e,0xea]
+# CHECK-LE: ldcix  21, 5, 7                  # encoding: [0xea,0x3e,0xa5,0x7e]
+            ldcix  21, 5, 7
+            
+# CHECK-BE: stbcix 21, 5, 7                  # encoding: [0x7e,0xa5,0x3f,0xaa]
+# CHECK-LE: stbcix 21, 5, 7                  # encoding: [0xaa,0x3f,0xa5,0x7e]
+            stbcix 21, 5, 7
+# CHECK-BE: sthcix 21, 5, 7                  # encoding: [0x7e,0xa5,0x3f,0x6a]
+# CHECK-LE: sthcix 21, 5, 7                  # encoding: [0x6a,0x3f,0xa5,0x7e]
+            sthcix 21, 5, 7
+# CHECK-BE: stwcix 21, 5, 7                  # encoding: [0x7e,0xa5,0x3f,0x2a]
+# CHECK-LE: stwcix 21, 5, 7                  # encoding: [0x2a,0x3f,0xa5,0x7e]
+            stwcix 21, 5, 7
+# CHECK-BE: stdcix 21, 5, 7                  # encoding: [0x7e,0xa5,0x3f,0xea]
+# CHECK-LE: stdcix 21, 5, 7                  # encoding: [0xea,0x3f,0xa5,0x7e]
+            stdcix 21, 5, 7
+
 # Processor-Specific Instructions
 # CHECK-BE: attn                             # encoding: [0x00,0x00,0x02,0x00]
 # CHECK-LE: attn                             # encoding: [0x00,0x02,0x00,0x00]