From: Kevin Enderby <enderby@apple.com>
Date: Wed, 28 Apr 2010 23:20:40 +0000 (+0000)
Subject: Fixed the word sized Bit Scan Forward/Reverse instructions, they needed the
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=9ac7282117d57932933b539fc8b7b17b6693cf9f;p=oota-llvm.git

Fixed the word sized Bit Scan Forward/Reverse instructions, they needed the
Operand size override prefix to be part of their records.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102556 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td
index 460643a96f0..ad3a3830082 100644
--- a/lib/Target/X86/X86InstrInfo.td
+++ b/lib/Target/X86/X86InstrInfo.td
@@ -781,10 +781,11 @@ let isTwoAddress = 1 in                               // GR32 = bswap GR32
 let Defs = [EFLAGS] in {
 def BSF16rr  : I<0xBC, MRMSrcReg, (outs GR16:$dst), (ins GR16:$src),
                  "bsf{w}\t{$src, $dst|$dst, $src}",
-                 [(set GR16:$dst, EFLAGS, (X86bsf GR16:$src))]>, TB;
+                 [(set GR16:$dst, EFLAGS, (X86bsf GR16:$src))]>, TB, OpSize;
 def BSF16rm  : I<0xBC, MRMSrcMem, (outs GR16:$dst), (ins i16mem:$src),
                  "bsf{w}\t{$src, $dst|$dst, $src}",
-                 [(set GR16:$dst, EFLAGS, (X86bsf (loadi16 addr:$src)))]>, TB;
+                 [(set GR16:$dst, EFLAGS, (X86bsf (loadi16 addr:$src)))]>, TB,
+                 OpSize;
 def BSF32rr  : I<0xBC, MRMSrcReg, (outs GR32:$dst), (ins GR32:$src),
                  "bsf{l}\t{$src, $dst|$dst, $src}",
                  [(set GR32:$dst, EFLAGS, (X86bsf GR32:$src))]>, TB;
@@ -794,10 +795,11 @@ def BSF32rm  : I<0xBC, MRMSrcMem, (outs GR32:$dst), (ins i32mem:$src),
 
 def BSR16rr  : I<0xBD, MRMSrcReg, (outs GR16:$dst), (ins GR16:$src),
                  "bsr{w}\t{$src, $dst|$dst, $src}",
-                 [(set GR16:$dst, EFLAGS, (X86bsr GR16:$src))]>, TB;
+                 [(set GR16:$dst, EFLAGS, (X86bsr GR16:$src))]>, TB, OpSize;
 def BSR16rm  : I<0xBD, MRMSrcMem, (outs GR16:$dst), (ins i16mem:$src),
                  "bsr{w}\t{$src, $dst|$dst, $src}",
-                 [(set GR16:$dst, EFLAGS, (X86bsr (loadi16 addr:$src)))]>, TB;
+                 [(set GR16:$dst, EFLAGS, (X86bsr (loadi16 addr:$src)))]>, TB,
+                 OpSize;
 def BSR32rr  : I<0xBD, MRMSrcReg, (outs GR32:$dst), (ins GR32:$src),
                  "bsr{l}\t{$src, $dst|$dst, $src}",
                  [(set GR32:$dst, EFLAGS, (X86bsr GR32:$src))]>, TB;
diff --git a/test/MC/AsmParser/X86/x86_32-encoding.s b/test/MC/AsmParser/X86/x86_32-encoding.s
index bf573e8b611..b5472ca49c4 100644
--- a/test/MC/AsmParser/X86/x86_32-encoding.s
+++ b/test/MC/AsmParser/X86/x86_32-encoding.s
@@ -9968,3 +9968,19 @@
 // CHECK:  fixup A - offset: 5, value: CPI1_0-4
 pshufb	CPI1_0(%rip), %xmm1   
 
+// rdar://7910087
+// CHECK: bsfw	%bx, %bx
+// CHECK:  encoding: [0x66,0x0f,0xbc,0xdb]
+          bsfw  %bx, %bx
+
+// CHECK: bsfw	3735928559(%ebx,%ecx,8), %bx
+// CHECK:  encoding: [0x66,0x0f,0xbc,0x9c,0xcb,0xef,0xbe,0xad,0xde]
+          bsfw  3735928559(%ebx,%ecx,8), %bx
+
+// CHECK: bsrw	%bx, %bx
+// CHECK:  encoding: [0x66,0x0f,0xbd,0xdb]
+          bsrw  %bx, %bx
+
+// CHECK: bsrw	305419896, %bx
+// CHECK:  encoding: [0x66,0x0f,0xbd,0x1d,0x78,0x56,0x34,0x12]
+          bsrw  305419896, %bx