[PATCH] Finish assembly support for Intel SHA Extensions

[Ben Langmuir]

Hi craig.topper,

Add the remaining Intel SHA instructions and tests.  All of these instructions
seem to have the same form, except that sha256rnds2 has an implicit read
dependency on xmm0.

http://llvm-reviews.chandlerc.com/D1663

Files:
  lib/Target/X86/X86InstrSSE.td
  test/MC/Disassembler/X86/x86-64.txt
  test/MC/X86/x86_64-encoding.s

Index: lib/Target/X86/X86InstrSSE.td
===================================================================
--- lib/Target/X86/X86InstrSSE.td
+++ lib/Target/X86/X86InstrSSE.td
@@ -7324,6 +7324,17 @@
 // SHA-NI Instructions
 //===----------------------------------------------------------------------===//
 
+multiclass SHAI_binop<bits<8> Opc, string OpcodeStr> {
+  def rr : I<Opc, MRMSrcReg, (outs VR128:$dst),
+             (ins VR128:$src1, VR128:$src2),
+             !strconcat(OpcodeStr, "\t{$src2, $dst|$dst, $src2}"), []>, T8;
+
+  let mayLoad = 1 in
+  def rm : I<Opc, MRMSrcMem, (outs VR128:$dst),
+             (ins VR128:$src1, i128mem:$src2),
+             !strconcat(OpcodeStr, "\t{$src2, $dst|$dst, $src2}"), []>, T8;
+}
+
 let Constraints = "$src1 = $dst", hasSideEffects = 0, Predicates = [HasSHA] in {
   def SHA1RNDS4rri : Ii8<0xCC, MRMSrcReg, (outs VR128:$dst),
                          (ins VR128:$src1, VR128:$src2, i8imm:$src3),
@@ -7334,6 +7345,16 @@
                          (ins VR128:$src1, i128mem:$src2, i8imm:$src3),
                          "sha1rnds4\t{$src3, $src2, $dst|$dst, $src2, $src3}",
                          []>, TA;
+
+  defm SHA1NEXTE : SHAI_binop<0xC8, "sha1nexte">;
+  defm SHA1MSG1  : SHAI_binop<0xC9, "sha1msg1">;
+  defm SHA1MSG2  : SHAI_binop<0xCA, "sha1msg2">;
+
+  let Uses=[XMM0] in
+  defm SHA256RNDS2 : SHAI_binop<0xCB, "sha256rnds2">;
+
+  defm SHA256MSG1 : SHAI_binop<0xCC, "sha256msg1">;
+  defm SHA256MSG2 : SHAI_binop<0xCD, "sha256msg2">;
 }
 
 //===----------------------------------------------------------------------===//
Index: test/MC/Disassembler/X86/x86-64.txt
===================================================================
--- test/MC/Disassembler/X86/x86-64.txt
+++ test/MC/Disassembler/X86/x86-64.txt
@@ -162,4 +162,40 @@
 0x0f 0x3a 0xcc 0xd1 0x01
 
 # CHECK: sha1rnds4 $1, (%rax), %xmm2
-0x0f 0x3a 0xcc 0x10 0x01
\ No newline at end of file
+0x0f 0x3a 0xcc 0x10 0x01
+
+# CHECK: sha1nexte %xmm1, %xmm2
+0x0f 0x38 0xc8 0xd1
+
+# CHECK: sha1nexte (%rax), %xmm2
+0x0f 0x38 0xc8 0x10
+
+# CHECK: sha1msg1 %xmm1, %xmm2
+0x0f 0x38 0xc9 0xd1
+
+# CHECK: sha1msg1 (%rax), %xmm2
+0x0f 0x38 0xc9 0x10
+
+# CHECK: sha1msg2 %xmm1, %xmm2
+0x0f 0x38 0xca 0xd1
+
+# CHECK: sha1msg2 (%rax), %xmm2
+0x0f 0x38 0xca 0x10
+
+# CHECK: sha256rnds2 (%rax), %xmm2
+0x0f 0x38 0xcb 0x10
+
+# CHECK: sha256rnds2 %xmm1, %xmm2
+0x0f 0x38 0xcb 0xd1
+
+# CHECK: sha256msg1 %xmm1, %xmm2
+0x0f 0x38 0xcc 0xd1
+
+# CHECK: sha256msg1 (%rax), %xmm2
+0x0f 0x38 0xcc 0x10
+
+# CHECK: sha256msg2 %xmm1, %xmm2
+0x0f 0x38 0xcd 0xd1
+
+# CHECK: sha256msg2 (%rax), %xmm2
+0x0f 0x38 0xcd 0x10
\ No newline at end of file
Index: test/MC/X86/x86_64-encoding.s
===================================================================
--- test/MC/X86/x86_64-encoding.s
+++ test/MC/X86/x86_64-encoding.s
@@ -128,6 +128,50 @@
 // CHECK:   encoding: [0x0f,0x3a,0xcc,0x10,0x01]
 sha1rnds4 $1, (%rax), %xmm2
 
+// CHECK: sha1nexte %xmm1, %xmm2
+// CHECK:   encoding: [0x0f,0x38,0xc8,0xd1]
+sha1nexte %xmm1, %xmm2
+
+// CHECK: sha1msg1 %xmm1, %xmm2
+// CHECK:   encoding: [0x0f,0x38,0xc9,0xd1]
+sha1msg1 %xmm1, %xmm2
+
+// CHECK: sha1msg1 (%rax), %xmm2
+// CHECK:   encoding: [0x0f,0x38,0xc9,0x10]
+sha1msg1 (%rax), %xmm2
+
+// CHECK: sha1msg2 %xmm1, %xmm2
+// CHECK:   encoding: [0x0f,0x38,0xca,0xd1]
+sha1msg2 %xmm1, %xmm2
+
+// CHECK: sha1msg2 (%rax), %xmm2
+// CHECK:   encoding: [0x0f,0x38,0xca,0x10]
+sha1msg2 (%rax), %xmm2
+
+// CHECK: sha256rnds2 (%rax), %xmm2
+// CHECK:   encoding: [0x0f,0x38,0xcb,0x10]
+sha256rnds2 (%rax), %xmm2
+
+// CHECK: sha256rnds2 %xmm1, %xmm2
+// CHECK:   encoding: [0x0f,0x38,0xcb,0xd1]
+sha256rnds2 %xmm1, %xmm2
+
+// CHECK: sha256msg1 %xmm1, %xmm2
+// CHECK:   encoding: [0x0f,0x38,0xcc,0xd1]
+sha256msg1 %xmm1, %xmm2
+
+// CHECK: sha256msg1 (%rax), %xmm2
+// CHECK:   encoding: [0x0f,0x38,0xcc,0x10]
+sha256msg1 (%rax), %xmm2
+
+// CHECK: sha256msg2 %xmm1, %xmm2
+// CHECK:   encoding: [0x0f,0x38,0xcd,0xd1]
+sha256msg2 %xmm1, %xmm2
+
+// CHECK: sha256msg2 (%rax), %xmm2
+// CHECK:   encoding: [0x0f,0x38,0xcd,0x10]
+sha256msg2 (%rax), %xmm2
+
 // CHECK: movq  57005(,%riz), %rbx
 // CHECK: encoding: [0x48,0x8b,0x1c,0x25,0xad,0xde,0x00,0x00]
           movq  57005(,%riz), %rbx
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