| # RUN: llc -mtriple=aarch64-none-linux-gnu -run-pass none -o - %s | FileCheck %s |
| |
| --- | |
| define i32 @swp(i32* %addr) #0 { |
| entry: |
| %0 = atomicrmw xchg i32* %addr, i32 1 monotonic |
| ret i32 %0 |
| } |
| |
| attributes #0 = { "target-features"="+lse" } |
| ... |
| --- |
| name: swp |
| alignment: 2 |
| tracksRegLiveness: true |
| registers: |
| - { id: 0, class: gpr64common } |
| - { id: 1, class: gpr32 } |
| - { id: 2, class: gpr32 } |
| liveins: |
| - { reg: '$x0', virtual-reg: '%0' } |
| body: | |
| bb.0.entry: |
| liveins: $x0 |
| |
| ; CHECK-LABEL: swp |
| ; CHECK: {{[0-9]+}}:gpr32 = SWPW killed %1, %0 :: (volatile load store monotonic 4 on %ir.addr) |
| %0:gpr64common = COPY $x0 |
| %1:gpr32 = MOVi32imm 1 |
| %2:gpr32 = SWPW killed %1, %0 :: (volatile load store monotonic 4 on %ir.addr) |
| $w0 = COPY %2 |
| RET_ReallyLR implicit $w0 |
| ... |
