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# NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
# REQUIRES: asserts
# RUN: llc -mtriple riscv64 -start-before=prologepilog -o - \
# RUN: -verify-machineinstrs %s | FileCheck %s
#
# RUN: llc -mtriple riscv64 -start-before=prologepilog -o /dev/null \
# RUN: -debug-only=prologepilog -verify-machineinstrs %s 2>&1 \
# RUN: | FileCheck --check-prefix=DEBUG %s
#
# DEBUG: Adjusting emergency spill slots!
# DEBUG: Adjusting offset of emergency spill slot #4 from -4112 to -8192
# FIXME: The code generated here is incorrect. It stores a0 to 0(sp) before
# sub sp, sp, a0 but restores it after sub sp, sp, a0. We may need to implement
# the target hook saveScavengerRegister to solve it.
--- |
; ModuleID = 'reduced.ll'
source_filename = "frame_layout-1253b1.cpp"
target datalayout = "e-m:e-p:64:64-i64:64-i128:128-n64-S128"
target triple = "riscv64"
; Function Attrs: nounwind
define weak_odr dso_local void @foo(i8* %ay) nounwind {
; CHECK-LABEL: foo:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: addi sp, sp, -2032
; CHECK-NEXT: sd ra, 2024(sp) # 8-byte Folded Spill
; CHECK-NEXT: sd s0, 2016(sp) # 8-byte Folded Spill
; CHECK-NEXT: addi s0, sp, 2032
; CHECK-NEXT: sd a0, 0(sp)
; CHECK-NEXT: lui a0, 2
; CHECK-NEXT: addiw a0, a0, -2032
; CHECK-NEXT: sub sp, sp, a0
; CHECK-NEXT: srli a0, sp, 12
; CHECK-NEXT: slli sp, a0, 12
; CHECK-NEXT: ld a0, 0(sp)
; CHECK-NEXT: sd a1, 0(sp)
; CHECK-NEXT: lui a1, 1
; CHECK-NEXT: add a1, sp, a1
; CHECK-NEXT: sd a0, -8(a1)
; CHECK-NEXT: ld a1, 0(sp)
; CHECK-NEXT: call foo@plt
; CHECK-NEXT: lui a0, 2
; CHECK-NEXT: sub sp, s0, a0
; CHECK-NEXT: addiw a0, a0, -2032
; CHECK-NEXT: add sp, sp, a0
; CHECK-NEXT: ld ra, 2024(sp) # 8-byte Folded Reload
; CHECK-NEXT: ld s0, 2016(sp) # 8-byte Folded Reload
; CHECK-NEXT: addi sp, sp, 2032
; CHECK-NEXT: ret
entry:
ret void
}
...
---
name: foo
alignment: 2
tracksRegLiveness: false
frameInfo:
maxAlignment: 4096
stack:
- { id: 0, size: 8, alignment: 4096 }
- { id: 1, type: spill-slot, size: 8, alignment: 8 }
machineFunctionInfo: {}
body: |
bb.0.entry:
liveins: $x1, $x5, $x6, $x7, $x10, $x11, $x12, $x13, $x14, $x15, $x16, $x17, $x28, $x29, $x30, $x31
; This is to store something to the (non-emergency) spill slot %stack.1.
SD $x10, %stack.1, 0
; This is here just to make all the eligible registers live at this point.
; This way when we replace the frame index %stack.1 with its actual address
; we have to allocate a virtual register to compute it.
; A later run of the the register scavenger won't find an available register
; either so it will have to spill one to the emergency spill slot.
PseudoCALL target-flags(riscv-plt) @foo, csr_ilp32_lp64, implicit-def $x1, implicit-def $x2, implicit $x1, implicit $x5, implicit $x6, implicit $x7, implicit $x10, implicit $x11, implicit $x12, implicit $x13, implicit $x14, implicit $x15, implicit $x16, implicit $x17, implicit $x28, implicit $x29, implicit $x30, implicit $x31
PseudoRET
...
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