1 files changed, 146 insertions, 0 deletions
diff --git a/test/MC/X86/index-operations.s b/test/MC/X86/index-operations.s
new file mode 100644
index 0000000..9f69b0b
--- /dev/null
+++ b/test/MC/X86/index-operations.s
@@ -0,0 +1,146 @@
+// RUN: not llvm-mc -triple x86_64-unknown-unknown --show-encoding %s 2> %t.err | FileCheck --check-prefix=64 %s
+// RUN: FileCheck --check-prefix=ERR64 < %t.err %s
+// RUN: not llvm-mc -triple i386-unknown-unknown --show-encoding %s 2> %t.err | FileCheck --check-prefix=32 %s
+// RUN: FileCheck --check-prefix=ERR32 < %t.err %s
+// RUN: not llvm-mc -triple i386-unknown-unknown-code16 --show-encoding %s 2> %t.err | FileCheck --check-prefix=16 %s
+// RUN: FileCheck --check-prefix=ERR16 < %t.err %s
+
+lodsb
+// 64: lodsb (%rsi), %al # encoding: [0xac]
+// 32: lodsb (%esi), %al # encoding: [0xac]
+// 16: lodsb (%si), %al # encoding: [0xac]
+
+lodsb (%rsi), %al
+// 64: lodsb (%rsi), %al # encoding: [0xac]
+// ERR32: 64-bit
+// ERR16: 64-bit
+
+lodsb (%esi), %al
+// 64: lodsb (%esi), %al # encoding: [0x67,0xac]
+// 32: lodsb (%esi), %al # encoding: [0xac]
+// 16: lodsb (%esi), %al # encoding: [0x67,0xac]
+
+lodsb (%si), %al
+// ERR64: invalid 16-bit base register
+// 32: lodsb (%si), %al # encoding: [0x67,0xac]
+// 16: lodsb (%si), %al # encoding: [0xac]
+
+lodsl %gs:(%esi)
+// 64: lodsl %gs:(%esi), %eax # encoding: [0x65,0x67,0xad]
+// 32: lodsl %gs:(%esi), %eax # encoding: [0x65,0xad]
+// 16: lodsl %gs:(%esi), %eax # encoding: [0x66,0x65,0x67,0xad]
+
+lodsl (%edi), %eax
+// ERR64: invalid operand
+// ERR32: invalid operand
+// ERR16: invalid operand
+
+lodsl 44(%edi), %eax
+// ERR64: invalid operand
+// ERR32: invalid operand
+// ERR16: invalid operand
+
+lods (%esi), %ax
+// 64: lodsw (%esi), %ax # encoding: [0x66,0x67,0xad]
+// 32: lodsw (%esi), %ax # encoding: [0x66,0xad]
+// 16: lodsw (%esi), %ax # encoding: [0x67,0xad]
+
+stosw
+// 64: stosw %ax, %es:(%rdi) # encoding: [0x66,0xab]
+// 32: stosw %ax, %es:(%edi) # encoding: [0x66,0xab]
+// 16: stosw %ax, %es:(%di) # encoding: [0xab]
+
+stos %eax, (%edi)
+// 64: stosl %eax, %es:(%edi) # encoding: [0x67,0xab]
+// 32: stosl %eax, %es:(%edi) # encoding: [0xab]
+// 16: stosl %eax, %es:(%edi) # encoding: [0x66,0x67,0xab]
+
+stosb %al, %fs:(%edi)
+// ERR64: invalid operand for instruction
+// ERR32: invalid operand for instruction
+// ERR16: invalid operand for instruction
+
+stosb %al, %es:(%edi)
+// 64: stosb %al, %es:(%edi) # encoding: [0x67,0xaa]
+// 32: stosb %al, %es:(%edi) # encoding: [0xaa]
+// 16: stosb %al, %es:(%edi) # encoding: [0x67,0xaa]
+
+stosq
+// 64: stosq %rax, %es:(%rdi) # encoding: [0x48,0xab]
+// ERR32: 64-bit
+// ERR16: 64-bit
+
+stos %rax, (%edi)
+// 64: 	stosq %rax, %es:(%edi) # encoding: [0x48,0x67,0xab]
+// ERR32: only available in 64-bit mode
+// ERR16: only available in 64-bit mode
+
+scas %es:(%edi), %al
+// 64: scasb %es:(%edi), %al # encoding: [0x67,0xae]
+// 32: scasb %es:(%edi), %al # encoding: [0xae]
+// 16: scasb %es:(%edi), %al # encoding: [0x67,0xae]
+
+scasq %es:(%edi)
+// 64: scasq %es:(%edi), %rax # encoding: [0x48,0x67,0xaf]
+// ERR32: 64-bit
+// ERR16: 64-bit
+
+scasl %es:(%edi), %al
+// ERR64: invalid operand
+// ERR32: invalid operand
+// ERR16: invalid operand
+
+scas %es:(%di), %ax
+// ERR64: invalid 16-bit base register
+// 16: scasw %es:(%di), %ax # encoding: [0xaf]
+// 32: scasw %es:(%di), %ax # encoding: [0x66,0x67,0xaf]
+
+cmpsb
+// 64: cmpsb %es:(%rdi), (%rsi) # encoding: [0xa6]
+// 32: cmpsb %es:(%edi), (%esi) # encoding: [0xa6]
+// 16: cmpsb %es:(%di), (%si) # encoding: [0xa6]
+
+cmpsw (%edi), (%esi)
+// 64: cmpsw %es:(%edi), (%esi) # encoding: [0x66,0x67,0xa7]
+// 32: cmpsw %es:(%edi), (%esi) # encoding: [0x66,0xa7]
+// 16: cmpsw %es:(%edi), (%esi) # encoding: [0x67,0xa7]
+
+cmpsb (%di), (%esi)
+// ERR64: invalid 16-bit base register
+// ERR32: mismatching source and destination
+// ERR16: mismatching source and destination
+
+cmpsl %es:(%edi), %ss:(%esi)
+// 64: cmpsl %es:(%edi), %ss:(%esi) # encoding: [0x36,0x67,0xa7]
+// 32: cmpsl %es:(%edi), %ss:(%esi) # encoding: [0x36,0xa7]
+// 16: cmpsl %es:(%edi), %ss:(%esi) # encoding: [0x66,0x36,0x67,0xa7]
+
+cmpsq (%rdi), (%rsi)
+// 64: cmpsq %es:(%rdi), (%rsi) # encoding: [0x48,0xa7]
+// ERR32: 64-bit
+// ERR16: 64-bit
+
+movsb (%esi), (%edi)
+// 64: movsb (%esi), %es:(%edi) # encoding: [0x67,0xa4]
+// 32: movsb (%esi), %es:(%edi) # encoding: [0xa4]
+// 16: movsb (%esi), %es:(%edi) # encoding: [0x67,0xa4]
+
+movsl %gs:(%esi), (%edi)
+// 64: movsl %gs:(%esi), %es:(%edi) # encoding: [0x65,0x67,0xa5]
+// 32: movsl %gs:(%esi), %es:(%edi) # encoding: [0x65,0xa5]
+// 16: movsl %gs:(%esi), %es:(%edi) # encoding: [0x66,0x65,0x67,0xa5]
+
+outsb
+// 64: outsb (%rsi), %dx # encoding: [0x6e]
+// 32: outsb (%esi), %dx # encoding: [0x6e]
+// 16: outsb (%si), %dx # encoding: [0x6e]
+
+outsw %fs:(%esi), %dx
+// 64: outsw %fs:(%esi), %dx # encoding: [0x66,0x64,0x67,0x6f]
+// 32: outsw %fs:(%esi), %dx # encoding: [0x66,0x64,0x6f]
+// 16: outsw %fs:(%esi), %dx # encoding: [0x64,0x67,0x6f]
+
+insw %dx, (%edi)
+// 64: insw %dx, %es:(%edi) # encoding: [0x66,0x67,0x6d]
+// 32: insw %dx, %es:(%edi) # encoding: [0x66,0x6d]
+// 16: insw %dx, %es:(%edi) # encoding: [0x67,0x6d]