[PATCH] [llvm-mc] Fix bad sign extension on callw immediate

[Matthew Barney]

added unit tests for 16, 32, and 64 bit CALL disassembly.


REPOSITORY
  rL LLVM

http://reviews.llvm.org/D9514

Files:
  test/MC/Disassembler/X86/x86-16.txt
  test/MC/Disassembler/X86/x86-32.txt
  test/MC/Disassembler/X86/x86-64.txt

Index: test/MC/Disassembler/X86/x86-16.txt
===================================================================
--- test/MC/Disassembler/X86/x86-16.txt
+++ test/MC/Disassembler/X86/x86-16.txt
@@ -786,3 +786,5 @@
 # CHECK: lretl
 0x66 0xcb
 
+# CHECK: callw	-1
+0xe8 0xff 0xff
Index: test/MC/Disassembler/X86/x86-32.txt
===================================================================
--- test/MC/Disassembler/X86/x86-32.txt
+++ test/MC/Disassembler/X86/x86-32.txt
@@ -54,6 +54,9 @@
 # CHECK: calll	-1234
 0xe8 0x2e 0xfb 0xff 0xff
 
+# CHECK: callw	-1
+0x66 0xe8 0xff 0xff
+
 # CHECK: lfence
 0x0f 0xae 0xe8
 
Index: test/MC/Disassembler/X86/x86-64.txt
===================================================================
--- test/MC/Disassembler/X86/x86-64.txt
+++ test/MC/Disassembler/X86/x86-64.txt
@@ -301,3 +301,9 @@
 
 # CHECK: movq %rax, 1515870810
 0x67, 0x48 0xa3 0x5a 0x5a 0x5a 0x5a
+
+# CHECK: callq 32767
+0xe8 0xff 0x7f 0x00 0x00
+
+# CHECK: callq -32769
+0xe8 0xff 0x7f 0xff 0xff

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