From 9389b60a03890b70872e5ee2f078c4a4a00d123b Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Mon, 6 Sep 2010 23:29:05 +0000
Subject: [PATCH] fix the operand constraints of the immediate form of in/out,
 allowing unsigned 8-bit operands.  This fixes rdar://8208481

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113182 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/X86/X86InstrInfo.td           | 12 ++++++------
 test/MC/AsmParser/X86/x86_instructions.s |  9 +++++++++
 2 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td
index 09b7721a621..879fa698019 100644
--- a/lib/Target/X86/X86InstrInfo.td
+++ b/lib/Target/X86/X86InstrInfo.td
@@ -978,13 +978,13 @@ def IN32rr : I<0xED, RawFrm, (outs), (ins),
                "in{l}\t{%dx, %eax|%EAX, %DX}", []>;
 
 let Defs = [AL] in
-def IN8ri  : Ii8<0xE4, RawFrm, (outs), (ins i16i8imm:$port),
+def IN8ri  : Ii8<0xE4, RawFrm, (outs), (ins i8imm:$port),
                   "in{b}\t{$port, %al|%AL, $port}", []>;
 let Defs = [AX] in
-def IN16ri : Ii8<0xE5, RawFrm, (outs), (ins i16i8imm:$port),
+def IN16ri : Ii8<0xE5, RawFrm, (outs), (ins i8imm:$port),
                   "in{w}\t{$port, %ax|%AX, $port}", []>, OpSize;
 let Defs = [EAX] in
-def IN32ri : Ii8<0xE5, RawFrm, (outs), (ins i16i8imm:$port),
+def IN32ri : Ii8<0xE5, RawFrm, (outs), (ins i8imm:$port),
                   "in{l}\t{$port, %eax|%EAX, $port}", []>;
 
 let Uses = [DX, AL] in
@@ -998,13 +998,13 @@ def OUT32rr : I<0xEF, RawFrm, (outs), (ins),
                 "out{l}\t{%eax, %dx|%DX, %EAX}", []>;
 
 let Uses = [AL] in
-def OUT8ir  : Ii8<0xE6, RawFrm, (outs), (ins i16i8imm:$port),
+def OUT8ir  : Ii8<0xE6, RawFrm, (outs), (ins i8imm:$port),
                    "out{b}\t{%al, $port|$port, %AL}", []>;
 let Uses = [AX] in
-def OUT16ir : Ii8<0xE7, RawFrm, (outs), (ins i16i8imm:$port),
+def OUT16ir : Ii8<0xE7, RawFrm, (outs), (ins i8imm:$port),
                    "out{w}\t{%ax, $port|$port, %AX}", []>, OpSize;
 let Uses = [EAX] in
-def OUT32ir : Ii8<0xE7, RawFrm, (outs), (ins i16i8imm:$port),
+def OUT32ir : Ii8<0xE7, RawFrm, (outs), (ins i8imm:$port),
                    "out{l}\t{%eax, $port|$port, %EAX}", []>;
 
 def IN8  : I<0x6C, RawFrm, (outs), (ins),
diff --git a/test/MC/AsmParser/X86/x86_instructions.s b/test/MC/AsmParser/X86/x86_instructions.s
index 5d7fff9bbca..43702a16174 100644
--- a/test/MC/AsmParser/X86/x86_instructions.s
+++ b/test/MC/AsmParser/X86/x86_instructions.s
@@ -164,3 +164,12 @@ imul $12, %eax
 
 // CHECK: imull %ecx, %eax
 imull %ecx, %eax
+
+
+// rdar://8208481
+// CHECK: outb	%al, $161
+outb	%al, $161
+// CHECK: outw	%ax, $128
+outw	%ax, $128
+// CHECK: inb	$161, %al
+inb	$161, %al