[MIR] Add support for missing CFI directives

The following CFI directives are suported by MC but not by MIR:

* .cfi_rel_offset
* .cfi_adjust_cfa_offset
* .cfi_escape
* .cfi_remember_state
* .cfi_restore_state
* .cfi_undefined
* .cfi_register
* .cfi_window_save

Add support for printing, parsing and update tests.

Differential Revision: https://reviews.llvm.org/D41230

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@320819 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 24 insertions, 35 deletions

diff --git a/test/CodeGen/MIR/AArch64/cfi.mir b/test/CodeGen/MIR/AArch64/cfi.mir
index 8d9a2772afa..2a39c272ec6 100644
--- a/test/CodeGen/MIR/AArch64/cfi.mir
+++ b/test/CodeGen/MIR/AArch64/cfi.mir
@@ -11,49 +11,38 @@
     ret void
   }
 
-  define void @trivial_fp_func_restore() {
-  entry:
-    call void @foo()
-    ret void
-  }
-
 ...
 ---
 name:            trivial_fp_func
 # CHECK-LABEL: name: trivial_fp_func
 body: |
   bb.0.entry:
-    liveins: %lr, %fp, %lr, %fp
-
-    %sp = frame-setup STPXpre killed %fp, killed %lr, %sp, -2
-    %fp = frame-setup ADDXri %sp, 0, 0
     ; CHECK: CFI_INSTRUCTION def_cfa %w29, 16
     frame-setup CFI_INSTRUCTION def_cfa %w29, 16
-    frame-setup CFI_INSTRUCTION offset %w30, -8
-    frame-setup CFI_INSTRUCTION offset %w29, -16
-    BL @foo, csr_aarch64_aapcs, implicit-def dead %lr, implicit %sp, implicit-def %sp
-    %sp, %fp, %lr = LDPXpost %sp, 2
-    RET_ReallyLR
-...
----
-name:            trivial_fp_func_restore
-# CHECK-LABEL: name: trivial_fp_func_restore
-body: |
-  bb.0.entry:
-    liveins: %lr, %fp
-
-    %sp = frame-setup STPXpre killed %fp, killed %lr, %sp, -2
-    %fp = frame-setup ADDXri %sp, 0, 0
-    frame-setup CFI_INSTRUCTION def_cfa %w29, 16
-    frame-setup CFI_INSTRUCTION offset %w30, -8
+    ; CHECK: CFI_INSTRUCTION def_cfa_register %w29
+    frame-setup CFI_INSTRUCTION def_cfa_register %w29
+    ; CHECK: CFI_INSTRUCTION def_cfa_offset -8
+    frame-setup CFI_INSTRUCTION def_cfa_offset -8
     ; CHECK: CFI_INSTRUCTION offset %w30, -8
-    frame-setup CFI_INSTRUCTION offset %w29, -16
-    ; CHECK: CFI_INSTRUCTION offset %w29, -16
-    BL @foo, csr_aarch64_aapcs, implicit-def dead %lr, implicit %sp, implicit-def %sp
-    %sp, %fp, %lr = LDPXpost %sp, 2
+    frame-setup CFI_INSTRUCTION offset %w30, -8
+    ; CHECK: CFI_INSTRUCTION rel_offset %w30, -8
+    frame-setup CFI_INSTRUCTION rel_offset %w30, -8
+    ; CHECK: CFI_INSTRUCTION adjust_cfa_offset -8
+    frame-setup CFI_INSTRUCTION adjust_cfa_offset -8
     CFI_INSTRUCTION restore %w30
     ; CHECK: CFI_INSTRUCTION restore %w30
-    CFI_INSTRUCTION restore %w29
-    ; CHECK: CFI_INSTRUCTION restore %w29
+    CFI_INSTRUCTION undefined %w30
+    ; CHECK: CFI_INSTRUCTION undefined %w30
+    CFI_INSTRUCTION same_value %w29
+    ; CHECK: CFI_INSTRUCTION same_value %w29
+    CFI_INSTRUCTION register %w20, %w30
+    ; CHECK: CFI_INSTRUCTION register %w20, %w30
+    CFI_INSTRUCTION remember_state
+    ; CHECK: CFI_INSTRUCTION remember_state
+    CFI_INSTRUCTION restore_state
+    ; CHECK: CFI_INSTRUCTION restore_state
+    CFI_INSTRUCTION escape 0x61, 0x62, 0x63
+    ; CHECK: CFI_INSTRUCTION escape 0x61, 0x62, 0x63
+    CFI_INSTRUCTION window_save
+    ; CHECK: CFI_INSTRUCTION window_save
     RET_ReallyLR
-...
diff --git a/test/CodeGen/MIR/X86/shrink_wrap_dbg_value.mir b/test/CodeGen/MIR/X86/shrink_wrap_dbg_value.mir
index f6679467056..bdc214c8e7b 100644
--- a/test/CodeGen/MIR/X86/shrink_wrap_dbg_value.mir
+++ b/test/CodeGen/MIR/X86/shrink_wrap_dbg_value.mir
@@ -162,7 +162,7 @@ body:             |
     ADJCALLSTACKDOWN32 4, 0, 4, implicit-def dead %esp, implicit-def dead %eflags, implicit-def dead %ssp, implicit %esp, implicit %ssp, debug-location !33
     DBG_VALUE %fixed-stack.1, 0, !14, !DIExpression(), debug-location !20
     PUSH32r %ebx, implicit-def %esp, implicit %esp, debug-location !33
-    ;CFI_INSTRUCTION <unserializable cfi operation>, debug-location !33
+    CFI_INSTRUCTION adjust_cfa_offset 4, debug-location !33
     CALLpcrel32 @doSomething, csr_32, implicit %esp, implicit %ssp, implicit-def %esp, implicit-def %ssp, implicit-def %eax, debug-location !33
     ADJCALLSTACKUP32 4, 0, implicit-def dead %esp, implicit-def dead %eflags, implicit-def dead %ssp, implicit %esp, implicit %ssp, debug-location !33
     %edi = INC32r killed %edi, implicit-def dead %eflags, debug-location !30