28 lines
1 KiB
YAML
28 lines
1 KiB
YAML
# RUN: llc -mtriple=aarch64-none-linux-gnu -run-pass=aarch64-expand-pseudo -o - %s | FileCheck %s
|
|
|
|
# When expanding a BLR_BTI, we should copy all the operands to the branch in the
|
|
# bundle. Otherwise we could end up using a register after the BL which was
|
|
# clobbered by the function that was called, or overwriting an argument to that
|
|
# function before we take the branch.
|
|
#
|
|
# The arguments to the call must become implicit arguments, because the branch
|
|
# only expects to get 1 explicit operand which is the branch target.
|
|
|
|
# CHECK: BUNDLE implicit-def $lr, implicit-def $w30, implicit-def $sp, implicit-def $wsp, implicit $sp, implicit $x0, implicit $w1 {
|
|
# CHECK: BL @_setjmp, csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit $x0, implicit $w1, implicit-def dead $lr, implicit $sp, implicit-def $sp
|
|
# CHECK: HINT 36
|
|
# CHECK: }
|
|
|
|
--- |
|
|
define void @a() {
|
|
ret void
|
|
}
|
|
|
|
declare void @_setjmp(...)
|
|
...
|
|
---
|
|
name: a
|
|
body: |
|
|
bb.0:
|
|
BLR_BTI @_setjmp, $x0, $w1, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp
|
|
...
|