optimize i8 and i16 tls values.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66725 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 18 insertions, 0 deletions

diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td
index 00ebce7..64d0021 100644
--- a/lib/Target/X86/X86InstrInfo.td
+++ b/lib/Target/X86/X86InstrInfo.td
@@ -2937,6 +2937,24 @@ def TLS_gs_ri : I<0x8B, Pseudo, (outs GR32:$dst), (ins i32imm:$src),
                     (load (add X86TLStp, (X86Wrapper tglobaltlsaddr:$src))))]>,
                   SegGS;
 
+let AddedComplexity = 15 in
+def TLS_ext16_gs_ri : I<0x8B, Pseudo, (outs GR32:$dst), (ins i32imm:$src),
+                        "movzwl\t%gs:${src:mem}, $dst",
+                        [(set GR32:$dst,
+                          (extloadi32i16
+                            (add X86TLStp,
+                              (X86Wrapper tglobaltlsaddr:$src))))]>,
+                        SegGS;
+
+let AddedComplexity = 15 in
+def TLS_ext8_gs_ri : I<0x8B, Pseudo, (outs GR32:$dst), (ins i32imm:$src),
+                        "movzbl\t%gs:${src:mem}, $dst",
+                        [(set GR32:$dst,
+                          (extloadi32i8
+                            (add X86TLStp,
+                              (X86Wrapper tglobaltlsaddr:$src))))]>,
+                        SegGS;
+
 def TLS_tp : I<0x8B, Pseudo, (outs GR32:$dst), (ins),
                "movl\t%gs:0, $dst",
                [(set GR32:$dst, X86TLStp)]>, SegGS;