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llvm-mirror/test/CodeGen/X86/machine-outliner-cfi-tail-some.mir
Andrew Litteken c5eb58bb14 fix to outline cfi instruction when can be grouped in a tail call
[MachineOutliner] fix test for excluding CFI and add test to include CFI in outlining

New test to check that we only outline CFI instruction if all CFI
Instructions in the function would be captured by the outlining

adding x86 tests analagous to AARCH64 cfi tests

Revision: https://reviews.llvm.org/D77852
2020-04-17 22:26:34 -07:00

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3.4 KiB
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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=x86_64-apple-unknown -run-pass=machine-outliner -verify-machineinstrs %s -o - | FileCheck %s
# Outlining CFI instructions is unsafe if we cannot outline all of the CFI
# instructions from a function. This shows that we choose not to outline the
# CFI instructions since function foo has a CFI Instruction that would not
# be caught.
--- |
define void @foo() #0 { ret void }
define void @bar() #0 { ret void }
define void @baz() #0 { ret void }
attributes #0 = { noredzone }
...
---
name: foo
tracksRegLiveness: true
body: |
bb.0:
; CHECK-LABEL: name: foo
; CHECK: CFI_INSTRUCTION def_cfa_offset 16
; CHECK: CFI_INSTRUCTION offset $rbp, -16
; CHECK: CFI_INSTRUCTION def_cfa_register $rbp
; CHECK: CALL64pcrel32 @OUTLINED_FUNCTION_1, implicit $rsp, implicit $ssp, implicit-def $eax, implicit-def $ebx, implicit-def $ecx, implicit $rsp, implicit $ssp
; CHECK: CFI_INSTRUCTION def_cfa_offset 16
; CHECK: CFI_INSTRUCTION offset $rbp, -16
; CHECK: CFI_INSTRUCTION def_cfa_register $rsp
; CHECK: TAILJMPd64 @OUTLINED_FUNCTION_0, implicit $rsp, implicit $ssp, implicit-def $eax, implicit-def $edi, implicit-def $edx, implicit-def $esi, implicit $rsp, implicit $ssp
CFI_INSTRUCTION def_cfa_offset 16
CFI_INSTRUCTION offset $rbp, -16
CFI_INSTRUCTION def_cfa_register $rbp
$eax = MOV32ri 1
$ebx = MOV32ri 2
$ecx = MOV32ri 3
CFI_INSTRUCTION def_cfa_offset 16
CFI_INSTRUCTION offset $rbp, -16
CFI_INSTRUCTION def_cfa_register $rsp
$esi = MOV32ri 1
$edx = MOV32ri 2
$edi = MOV32ri 3
$eax = MOV32ri 4
RETQ
...
---
name: bar
tracksRegLiveness: true
body: |
bb.0:
;liveins: $lr
; CHECK-LABEL: name: bar
; CHECK: CALL64pcrel32 @OUTLINED_FUNCTION_1, implicit $rsp, implicit $ssp, implicit-def $eax, implicit-def $ebx, implicit-def $ecx, implicit $rsp, implicit $ssp
; CHECK: CFI_INSTRUCTION def_cfa_offset 16
; CHECK: CFI_INSTRUCTION offset $rbp, -16
; CHECK: CFI_INSTRUCTION def_cfa_register $rsp
; CHECK: TAILJMPd64 @OUTLINED_FUNCTION_0, implicit $rsp, implicit $ssp, implicit-def $eax, implicit-def $edi, implicit-def $edx, implicit-def $esi, implicit $rsp, implicit $ssp
$eax = MOV32ri 1
$ebx = MOV32ri 2
$ecx = MOV32ri 3
CFI_INSTRUCTION def_cfa_offset 16
CFI_INSTRUCTION offset $rbp, -16
CFI_INSTRUCTION def_cfa_register $rsp
$esi = MOV32ri 1
$edx = MOV32ri 2
$edi = MOV32ri 3
$eax = MOV32ri 4
RETQ
...
---
name: baz
tracksRegLiveness: true
body: |
bb.0:
;liveins: $lr
; CHECK-LABEL: name: baz
; CHECK: CALL64pcrel32 @OUTLINED_FUNCTION_1, implicit $rsp, implicit $ssp, implicit-def $eax, implicit-def $ebx, implicit-def $ecx, implicit $rsp, implicit $ssp
; CHECK: CFI_INSTRUCTION def_cfa_offset 16
; CHECK: CFI_INSTRUCTION offset $rbp, -16
; CHECK: CFI_INSTRUCTION def_cfa_register $rsp
; CHECK: TAILJMPd64 @OUTLINED_FUNCTION_0, implicit $rsp, implicit $ssp, implicit-def $eax, implicit-def $edi, implicit-def $edx, implicit-def $esi, implicit $rsp, implicit $ssp
$eax = MOV32ri 1
$ebx = MOV32ri 2
$ecx = MOV32ri 3
CFI_INSTRUCTION def_cfa_offset 16
CFI_INSTRUCTION offset $rbp, -16
CFI_INSTRUCTION def_cfa_register $rsp
$esi = MOV32ri 1
$edx = MOV32ri 2
$edi = MOV32ri 3
$eax = MOV32ri 4
RETQ