filetests: add filetests for intel PIC encodings

cranelift/filetests/isa/intel/binary64-pic.cton

@@ -0,0 +1,54 @@
+; binary emission of 64-bit code.
+test binemit
+set is_64bit
+set is_compressed
+set is_pic
+isa intel haswell
+
+; The binary encodings can be verified with the command:
+;
+;   sed -ne 's/^ *; asm: *//p' filetests/isa/intel/binary64-pic.cton | llvm-mc -show-encoding -triple=x86_64
+;
+
+; Tests for i64 instructions.
+function %I64() {
+    fn0 = function %foo()
+    sig0 = ()
+
+    gv0 = globalsym %some_gv
+
+    ; Use incoming_arg stack slots because they won't be relocated by the frame
+    ; layout.
+    ss0 = incoming_arg 8, offset 0
+    ss1 = incoming_arg 1024, offset -1024
+    ss2 = incoming_arg 1024, offset -2048
+    ss3 = incoming_arg 8, offset -2056
+
+ebb0:
+
+    ; asm: call foo@PLT
+    call fn0()                                  ; bin: e8 PLTRel4(%foo) 00000000
+
+    ; asm: mov 0x0(%rip), %rax
+    [-,%rax]            v0 = func_addr.i64 fn0        ; bin: 48 8b 05 GotPCRel4(%foo) 00000000
+    ; asm: mov 0x0(%rip), %rsi
+    [-,%rsi]            v1 = func_addr.i64 fn0        ; bin: 48 8b 35 GotPCRel4(%foo) 00000000
+    ; asm: mov 0x0(%rip), %r10
+    [-,%r10]            v2 = func_addr.i64 fn0        ; bin: 4c 8b 15 GotPCRel4(%foo) 00000000
+
+    ; asm: call *%rax
+    call_indirect sig0, v0()                  ; bin: ff d0
+    ; asm: call *%rsi
+    call_indirect sig0, v1()                  ; bin: ff d6
+    ; asm: call *%r10
+    call_indirect sig0, v2()                  ; bin: 41 ff d2
+
+    ; asm: mov 0x0(%rip), %rcx
+    [-,%rcx]            v3 = globalsym_addr.i64 gv0    ; bin: 48 8b 0d GotPCRel4(%some_gv) 00000000
+    ; asm: mov 0x0(%rip), %rsi
+    [-,%rsi]            v4 = globalsym_addr.i64 gv0    ; bin: 48 8b 35 GotPCRel4(%some_gv) 00000000
+    ; asm: mov 0x0(%rip), %r10
+    [-,%r10]            v5 = globalsym_addr.i64 gv0    ; bin: 4c 8b 15 GotPCRel4(%some_gv) 00000000
+
+    return
+}