Reapply r249121 : "[FastISel][x86] Teach how to select SSE2/AVX bitcasts between...

[oota-llvm.git] / lib / Target / X86 / MCTargetDesc / X86BaseInfo.h

diff --git a/lib/Target/X86/MCTargetDesc/X86BaseInfo.h b/lib/Target/X86/MCTargetDesc/X86BaseInfo.h
index 5871f2ee215c758bde021def137e9d21ac75d9e1..f0d00b0c1bc3dab628af1ebb5fa47ce2dd65807e 100644 (file)
--- a/lib/Target/X86/MCTargetDesc/X86BaseInfo.h
+++ b/lib/Target/X86/MCTargetDesc/X86BaseInfo.h
@@ -267,7 +267,7 @@ namespace X86II {
     /// register DI/EDI/ESI.
     RawFrmDst      = 9,
 
-    /// RawFrmSrc - This form is for instructions that use the the source index
+    /// RawFrmSrc - This form is for instructions that use the source index
     /// register SI/ESI/ERI with a possible segment override, and also the
     /// destination index register DI/ESI/RDI.
     RawFrmDstSrc   = 10,
@@ -302,19 +302,21 @@ namespace X86II {
 
     //// MRM_XX - A mod/rm byte of exactly 0xXX.
     MRM_C0 = 32, MRM_C1 = 33, MRM_C2 = 34, MRM_C3 = 35,
-    MRM_C4 = 36, MRM_C8 = 37, MRM_C9 = 38, MRM_CA = 39,
-    MRM_CB = 40, MRM_CF = 41, MRM_D0 = 42, MRM_D1 = 43,
-    MRM_D4 = 44, MRM_D5 = 45, MRM_D6 = 46, MRM_D7 = 47,
-    MRM_D8 = 48, MRM_D9 = 49, MRM_DA = 50, MRM_DB = 51,
-    MRM_DC = 52, MRM_DD = 53, MRM_DE = 54, MRM_DF = 55,
-    MRM_E0 = 56, MRM_E1 = 57, MRM_E2 = 58, MRM_E3 = 59,
-    MRM_E4 = 60, MRM_E5 = 61, MRM_E8 = 62, MRM_E9 = 63,
-    MRM_EA = 64, MRM_EB = 65, MRM_EC = 66, MRM_ED = 67,
-    MRM_EE = 68, MRM_F0 = 69, MRM_F1 = 70, MRM_F2 = 71,
-    MRM_F3 = 72, MRM_F4 = 73, MRM_F5 = 74, MRM_F6 = 75,
-    MRM_F7 = 76, MRM_F8 = 77, MRM_F9 = 78, MRM_FA = 79,
-    MRM_FB = 80, MRM_FC = 81, MRM_FD = 82, MRM_FE = 83,
-    MRM_FF = 84,
+    MRM_C4 = 36, MRM_C5 = 37, MRM_C6 = 38, MRM_C7 = 39,
+    MRM_C8 = 40, MRM_C9 = 41, MRM_CA = 42, MRM_CB = 43,
+    MRM_CC = 44, MRM_CD = 45, MRM_CE = 46, MRM_CF = 47,
+    MRM_D0 = 48, MRM_D1 = 49, MRM_D2 = 50, MRM_D3 = 51,
+    MRM_D4 = 52, MRM_D5 = 53, MRM_D6 = 54, MRM_D7 = 55,
+    MRM_D8 = 56, MRM_D9 = 57, MRM_DA = 58, MRM_DB = 59,
+    MRM_DC = 60, MRM_DD = 61, MRM_DE = 62, MRM_DF = 63,
+    MRM_E0 = 64, MRM_E1 = 65, MRM_E2 = 66, MRM_E3 = 67,
+    MRM_E4 = 68, MRM_E5 = 69, MRM_E6 = 70, MRM_E7 = 71,
+    MRM_E8 = 72, MRM_E9 = 73, MRM_EA = 74, MRM_EB = 75,
+    MRM_EC = 76, MRM_ED = 77, MRM_EE = 78, MRM_EF = 79,
+    MRM_F0 = 80, MRM_F1 = 81, MRM_F2 = 82, MRM_F3 = 83,
+    MRM_F4 = 84, MRM_F5 = 85, MRM_F6 = 86, MRM_F7 = 87,
+    MRM_F8 = 88, MRM_F9 = 89, MRM_FA = 90, MRM_FB = 91,
+    MRM_FC = 92, MRM_FD = 93, MRM_FE = 94, MRM_FF = 95,
 
     FormMask       = 127,
 
@@ -676,16 +678,10 @@ namespace X86II {
        return -1;
     case X86II::MRMDestMem:
       return 0;
-    case X86II::MRMSrcMem: {
-      unsigned FirstMemOp = 1;
-      if (HasVEX_4V)
-        ++FirstMemOp;// Skip the register source (which is encoded in VEX_VVVV).
-      if (HasMemOp4)
-        ++FirstMemOp;// Skip the register source (which is encoded in I8IMM).
-      if (HasEVEX_K)
-        ++FirstMemOp;// Skip the mask register
-      return FirstMemOp;
-    }
+    case X86II::MRMSrcMem:
+      // Start from 1, skip any registers encoded in VEX_VVVV or I8IMM, or a
+      // mask register.
+      return 1 + HasVEX_4V + HasMemOp4 + HasEVEX_K;
     case X86II::MRMXr:
     case X86II::MRM0r: case X86II::MRM1r:
     case X86II::MRM2r: case X86II::MRM3r:
@@ -696,14 +692,9 @@ namespace X86II {
     case X86II::MRM0m: case X86II::MRM1m:
     case X86II::MRM2m: case X86II::MRM3m:
     case X86II::MRM4m: case X86II::MRM5m:
-    case X86II::MRM6m: case X86II::MRM7m: {
-      unsigned FirstMemOp = 0;
-      if (HasVEX_4V)
-        ++FirstMemOp;// Skip the register dest (which is encoded in VEX_VVVV).
-      if (HasEVEX_K)
-        ++FirstMemOp;// Skip the mask register
-      return FirstMemOp;
-    }
+    case X86II::MRM6m: case X86II::MRM7m:
+      // Start from 0, skip registers encoded in VEX_VVVV or a mask register.
+      return 0 + HasVEX_4V + HasEVEX_K;
     case X86II::MRM_C0: case X86II::MRM_C1: case X86II::MRM_C2:
     case X86II::MRM_C3: case X86II::MRM_C4: case X86II::MRM_C8:
     case X86II::MRM_C9: case X86II::MRM_CA: case X86II::MRM_CB: