MIR Serialization: Serialize the '.cfi_offset' CFI instruction.

Reviewers: Duncan P. N. Exon Smith
llvm-svn: 243062

3 files changed, 135 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/MIR/X86/cfi-offset.mir b/llvm/test/CodeGen/MIR/X86/cfi-offset.mir
new file mode 100644
index 00000000000..548bcb45924
--- /dev/null
+++ b/llvm/test/CodeGen/MIR/X86/cfi-offset.mir
@@ -0,0 +1,47 @@
+# RUN: llc -march=x86-64 -start-after branch-folder -stop-after branch-folder -o /dev/null %s | FileCheck %s
+# This test ensures that the MIR parser parses the .cfi_offset operands
+# correctly.
+
+--- |
+
+  declare void @foo(i32)
+
+  define i32 @test(i32 %a, i32 %b, i32 %c, i32 %d) {
+  entry:
+    %add = add nsw i32 %b, %a
+    %add1 = add nsw i32 %add, %c
+    %add2 = add nsw i32 %add1, %d
+    tail call void @foo(i32 %add2)
+    %add6 = add nsw i32 %add2, %add2
+    ret i32 %add6
+  }
+
+...
+---
+name:            test
+tracksRegLiveness: true
+frameInfo:
+  stackSize:       8
+  adjustsStack:    true
+  hasCalls:        true
+fixedStack:
+  - { id: 0, type: spill-slot, offset: -16, size: 8, alignment: 16 }
+body:
+  - id:              0
+    name:            entry
+    instructions:
+      - 'PUSH64r killed %rbx, implicit-def %rsp, implicit %rsp'
+      - 'CFI_INSTRUCTION .cfi_def_cfa_offset 16'
+      # CHECK: CFI_INSTRUCTION .cfi_offset %rbx, -16
+      - 'CFI_INSTRUCTION .cfi_offset %rbx, -16'
+      - '%ebx = COPY %edi, implicit-def %rbx'
+      - '%ebx = ADD32rr %ebx, killed %esi, implicit-def dead %eflags'
+      - '%ebx = ADD32rr %ebx, killed %edx, implicit-def dead %eflags'
+      - '%ebx = ADD32rr %ebx, killed %ecx, implicit-def dead %eflags'
+      - '%edi = COPY %ebx'
+      - 'CALL64pcrel32 @foo, csr_64, implicit %rsp, implicit %edi, implicit-def %rsp'
+      - '%eax = LEA64_32r killed %rbx, 1, %rbx, 0, _'
+      - '%rbx = POP64r implicit-def %rsp, implicit %rsp'
+      - 'RETQ %eax'
+...
+
diff --git a/llvm/test/CodeGen/MIR/X86/expected-comma-after-cfi-register.mir b/llvm/test/CodeGen/MIR/X86/expected-comma-after-cfi-register.mir
new file mode 100644
index 00000000000..8c4eac037fa
--- /dev/null
+++ b/llvm/test/CodeGen/MIR/X86/expected-comma-after-cfi-register.mir
@@ -0,0 +1,44 @@
+# RUN: not llc -march=x86-64 -start-after branch-folder -stop-after branch-folder -o /dev/null %s 2>&1 | FileCheck %s
+
+--- |
+
+  declare void @foo(i32)
+
+  define i32 @test(i32 %a, i32 %b, i32 %c, i32 %d) {
+  entry:
+    %add = add nsw i32 %b, %a
+    %add1 = add nsw i32 %add, %c
+    %add2 = add nsw i32 %add1, %d
+    tail call void @foo(i32 %add2)
+    %add6 = add nsw i32 %add2, %add2
+    ret i32 %add6
+  }
+
+...
+---
+name:            test
+tracksRegLiveness: true
+frameInfo:
+  stackSize:       8
+  adjustsStack:    true
+  hasCalls:        true
+fixedStack:
+  - { id: 0, type: spill-slot, offset: -16, size: 8, alignment: 16 }
+body:
+  - id:              0
+    name:            entry
+    instructions:
+      - 'PUSH64r killed %rbx, implicit-def %rsp, implicit %rsp'
+      - 'CFI_INSTRUCTION .cfi_def_cfa_offset 16'
+      # CHECK: [[@LINE+1]]:43: expected ','
+      - 'CFI_INSTRUCTION .cfi_offset %rbx -16'
+      - '%ebx = COPY %edi, implicit-def %rbx'
+      - '%ebx = ADD32rr %ebx, killed %esi, implicit-def dead %eflags'
+      - '%ebx = ADD32rr %ebx, killed %edx, implicit-def dead %eflags'
+      - '%ebx = ADD32rr %ebx, killed %ecx, implicit-def dead %eflags'
+      - '%edi = COPY %ebx'
+      - 'CALL64pcrel32 @foo, csr_64, implicit %rsp, implicit %edi, implicit-def %rsp'
+      - '%eax = LEA64_32r killed %rbx, 1, %rbx, 0, _'
+      - '%rbx = POP64r implicit-def %rsp, implicit %rsp'
+      - 'RETQ %eax'
+...
diff --git a/llvm/test/CodeGen/MIR/X86/expected-register-after-cfi-operand.mir b/llvm/test/CodeGen/MIR/X86/expected-register-after-cfi-operand.mir
new file mode 100644
index 00000000000..7178c1d4568
--- /dev/null
+++ b/llvm/test/CodeGen/MIR/X86/expected-register-after-cfi-operand.mir
@@ -0,0 +1,44 @@
+# RUN: not llc -march=x86-64 -start-after branch-folder -stop-after branch-folder -o /dev/null %s 2>&1 | FileCheck %s
+
+--- |
+
+  declare void @foo(i32)
+
+  define i32 @test(i32 %a, i32 %b, i32 %c, i32 %d) {
+  entry:
+    %add = add nsw i32 %b, %a
+    %add1 = add nsw i32 %add, %c
+    %add2 = add nsw i32 %add1, %d
+    tail call void @foo(i32 %add2)
+    %add6 = add nsw i32 %add2, %add2
+    ret i32 %add6
+  }
+
+...
+---
+name:            test
+tracksRegLiveness: true
+frameInfo:
+  stackSize:       8
+  adjustsStack:    true
+  hasCalls:        true
+fixedStack:
+  - { id: 0, type: spill-slot, offset: -16, size: 8, alignment: 16 }
+body:
+  - id:              0
+    name:            entry
+    instructions:
+      - 'PUSH64r killed %rbx, implicit-def %rsp, implicit %rsp'
+      - 'CFI_INSTRUCTION .cfi_def_cfa_offset 16'
+      # CHECK: [[@LINE+1]]:38: expected a cfi register
+      - 'CFI_INSTRUCTION .cfi_offset %0, -16'
+      - '%ebx = COPY %edi, implicit-def %rbx'
+      - '%ebx = ADD32rr %ebx, killed %esi, implicit-def dead %eflags'
+      - '%ebx = ADD32rr %ebx, killed %edx, implicit-def dead %eflags'
+      - '%ebx = ADD32rr %ebx, killed %ecx, implicit-def dead %eflags'
+      - '%edi = COPY %ebx'
+      - 'CALL64pcrel32 @foo, csr_64, implicit %rsp, implicit %edi, implicit-def %rsp'
+      - '%eax = LEA64_32r killed %rbx, 1, %rbx, 0, _'
+      - '%rbx = POP64r implicit-def %rsp, implicit %rsp'
+      - 'RETQ %eax'
+...