Turn on vzeroupper insertion on call boundaries for AVX; it works as far as I know...

[oota-llvm.git] / lib / Target / X86 / X86InstrExtension.td

diff --git a/lib/Target/X86/X86InstrExtension.td b/lib/Target/X86/X86InstrExtension.td
index f91cfba4f63896ae8930f1ad15e98f5b1ed24e64..e62e6b701f463eefdf8a3fcf49657f2025a66c19 100644 (file)
--- a/lib/Target/X86/X86InstrExtension.td
+++ b/lib/Target/X86/X86InstrExtension.td
@@ -38,18 +38,11 @@ let neverHasSideEffects = 1 in {
 
 
 // Sign/Zero extenders
-// Use movsbl intead of movsbw; we don't care about the high 16 bits
-// of the register here. This has a smaller encoding and avoids a
-// partial-register update.  Actual movsbw included for the disassembler.
-def MOVSX16rr8W : I<0xBE, MRMSrcReg, (outs GR16:$dst), (ins GR8:$src),
-                    "movs{bw|x}\t{$src, $dst|$dst, $src}", []>, TB, OpSize;
-def MOVSX16rm8W : I<0xBE, MRMSrcMem, (outs GR16:$dst), (ins i8mem:$src),
-                    "movs{bw|x}\t{$src, $dst|$dst, $src}", []>, TB, OpSize;
-def MOVSX16rr8 : I<0xBE, MRMSrcReg, (outs GR16:$dst), (ins GR8 :$src),
-                   "", [(set GR16:$dst, (sext GR8:$src))]>, TB;
-def MOVSX16rm8 : I<0xBE, MRMSrcMem, (outs GR16:$dst), (ins i8mem :$src),
-                   "", [(set GR16:$dst, (sextloadi16i8 addr:$src))]>, TB;
-def MOVSX32rr8 : I<0xBE, MRMSrcReg, (outs GR32:$dst), (ins GR8 :$src),
+def MOVSX16rr8 : I<0xBE, MRMSrcReg, (outs GR16:$dst), (ins GR8:$src),
+                   "movs{bw|x}\t{$src, $dst|$dst, $src}", []>, TB, OpSize;
+def MOVSX16rm8 : I<0xBE, MRMSrcMem, (outs GR16:$dst), (ins i8mem:$src),
+                   "movs{bw|x}\t{$src, $dst|$dst, $src}", []>, TB, OpSize;
+def MOVSX32rr8 : I<0xBE, MRMSrcReg, (outs GR32:$dst), (ins GR8:$src),
                    "movs{bl|x}\t{$src, $dst|$dst, $src}",
                    [(set GR32:$dst, (sext GR8:$src))]>, TB;
 def MOVSX32rm8 : I<0xBE, MRMSrcMem, (outs GR32:$dst), (ins i8mem :$src),
@@ -62,17 +55,10 @@ def MOVSX32rm16: I<0xBF, MRMSrcMem, (outs GR32:$dst), (ins i16mem:$src),
                    "movs{wl|x}\t{$src, $dst|$dst, $src}",
                    [(set GR32:$dst, (sextloadi32i16 addr:$src))]>, TB;
 
-// Use movzbl intead of movzbw; we don't care about the high 16 bits
-// of the register here. This has a smaller encoding and avoids a
-// partial-register update.  Actual movzbw included for the disassembler.
-def MOVZX16rr8W : I<0xB6, MRMSrcReg, (outs GR16:$dst), (ins GR8:$src),
-                    "movz{bw|x}\t{$src, $dst|$dst, $src}", []>, TB, OpSize;
-def MOVZX16rm8W : I<0xB6, MRMSrcMem, (outs GR16:$dst), (ins i8mem:$src),
-                    "movz{bw|x}\t{$src, $dst|$dst, $src}", []>, TB, OpSize;  
-def MOVZX16rr8 : I<0xB6, MRMSrcReg, (outs GR16:$dst), (ins GR8 :$src),
-                   "", [(set GR16:$dst, (zext GR8:$src))]>, TB;
-def MOVZX16rm8 : I<0xB6, MRMSrcMem, (outs GR16:$dst), (ins i8mem :$src),
-                   "", [(set GR16:$dst, (zextloadi16i8 addr:$src))]>, TB;
+def MOVZX16rr8 : I<0xB6, MRMSrcReg, (outs GR16:$dst), (ins GR8:$src),
+                   "movz{bw|x}\t{$src, $dst|$dst, $src}", []>, TB, OpSize;
+def MOVZX16rm8 : I<0xB6, MRMSrcMem, (outs GR16:$dst), (ins i8mem:$src),
+                   "movz{bw|x}\t{$src, $dst|$dst, $src}", []>, TB, OpSize;
 def MOVZX32rr8 : I<0xB6, MRMSrcReg, (outs GR32:$dst), (ins GR8 :$src),
                    "movz{bl|x}\t{$src, $dst|$dst, $src}",
                    [(set GR32:$dst, (zext GR8:$src))]>, TB;
@@ -90,13 +76,13 @@ def MOVZX32rm16: I<0xB7, MRMSrcMem, (outs GR32:$dst), (ins i16mem:$src),
 // except that they use GR32_NOREX for the output operand register class
 // instead of GR32. This allows them to operate on h registers on x86-64.
 def MOVZX32_NOREXrr8 : I<0xB6, MRMSrcReg,
-                         (outs GR32_NOREX:$dst), (ins GR8:$src),
-                         "movz{bl|x}\t{$src, $dst|$dst, $src}  # NOREX",
+                         (outs GR32_NOREX:$dst), (ins GR8_NOREX:$src),
+                         "movz{bl|x}\t{$src, $dst|$dst, $src}",
                          []>, TB;
 let mayLoad = 1 in
 def MOVZX32_NOREXrm8 : I<0xB6, MRMSrcMem,
-                         (outs GR32_NOREX:$dst), (ins i8mem:$src),
-                         "movz{bl|x}\t{$src, $dst|$dst, $src}  # NOREX",
+                         (outs GR32_NOREX:$dst), (ins i8mem_NOREX:$src),
+                         "movz{bl|x}\t{$src, $dst|$dst, $src}",
                          []>, TB;
 
 // MOVSX64rr8 always has a REX prefix and it has an 8-bit register
@@ -132,6 +118,9 @@ def MOVZX64rr16_Q : RI<0xB7, MRMSrcReg, (outs GR64:$dst), (ins GR16:$src),
 def MOVZX64rm16_Q : RI<0xB7, MRMSrcMem, (outs GR64:$dst), (ins i16mem:$src),
                        "movz{wq|x}\t{$src, $dst|$dst, $src}", []>, TB;
 
+// FIXME: These should be Pat patterns.
+let isCodeGenOnly = 1 in {
+
 // Use movzbl instead of movzbq when the destination is a register; it's
 // equivalent due to implicit zero-extending, and it has a smaller encoding.
 def MOVZX64rr8 : I<0xB6, MRMSrcReg, (outs GR64:$dst), (ins GR8 :$src),
@@ -158,5 +147,5 @@ def MOVZX64rm32 : I<0x8B, MRMSrcMem, (outs GR64:$dst), (ins i32mem:$src),
                     "", [(set GR64:$dst, (zextloadi64i32 addr:$src))]>;
 
 
-
+}