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llvm-project/llvm/test/CodeGen/AArch64/machine-outliner-calls.mir

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[MachineOutliner] Simplify call outlining + require valid callee save info for call outlining This commit simplifies the call outlining logic by removing references to the Function associated with the callee. To do this, it requires that valid callee save info is available to the outliner. llvm-svn: 328719
2018-03-29 01:52:31 +08:00
# RUN: llc -mtriple=aarch64--- -run-pass=prologepilog -run-pass=machine-outliner -verify-machineinstrs %s -o - | FileCheck %s
[MachineOutliner] AArch64: Emit CFI instructions when outlining calls When outlining calls, the outliner needs to update CFI to ensure that, say, exception handling works. This commit adds that functionality and adds a test just for call outlining. Call outlining stuff in machine-outliner.mir should be moved into machine-outliner-calls.mir in a later commit. llvm-svn: 327917
2018-03-20 06:48:40 +08:00
--- |
define void @baz() #0 {
ret void
}
define void @bar(i32 %a) #0 {
ret void
}
attributes #0 = { noredzone }
...
---
name: bar
tracksRegLiveness: true
body: |
bb.0:
liveins: $w0, $lr, $w8
$sp = frame-setup SUBXri $sp, 32, 0
$fp = frame-setup ADDXri $sp, 16, 0
bb.1:
BL @baz, implicit-def dead $lr, implicit $sp
$w17 = ORRWri $wzr, 1
$w17 = ORRWri $wzr, 1
$w0 = ORRWri $wzr, 4
BL @baz, implicit-def dead $lr, implicit $sp
$w17 = ORRWri $wzr, 1
$w17 = ORRWri $wzr, 1
$w0 = ORRWri $wzr, 3
BL @baz, implicit-def dead $lr, implicit $sp
$w17 = ORRWri $wzr, 1
$w17 = ORRWri $wzr, 1
$w0 = ORRWri $wzr, 2
BL @baz, implicit-def dead $lr, implicit $sp
$w17 = ORRWri $wzr, 1
$w17 = ORRWri $wzr, 1
$w0 = ORRWri $wzr, 1
bb.2:
$fp, $lr = LDPXi $sp, 2
RET undef $lr
...
---
name: baz
tracksRegLiveness: true
body: |
bb.0:
liveins: $w0, $lr, $w8
RET undef $lr
# CHECK: name: OUTLINED_FUNCTION_0
# CHECK-DAG: bb.0:
# CHECK-NEXT: liveins: $lr
# CHECK-DAG: frame-setup CFI_INSTRUCTION def_cfa_offset -16
# CHECK-NEXT: frame-setup CFI_INSTRUCTION offset $w30, 16
# CHECK-NEXT: early-clobber $sp = STRXpre $lr, $sp, -16
# CHECK-NEXT: BL @baz, implicit-def dead $lr, implicit $sp
# CHECK-NEXT: $w17 = ORRWri $wzr, 1
# CHECK-NEXT: $w17 = ORRWri $wzr, 1
# CHECK-NEXT: early-clobber $sp, $lr = LDRXpost $sp, 16
# CHECK-NEXT: RET undef $lr