xref: /llvm-project/llvm/test/CodeGen/RISCV/rv64-statepoint-call-lowering.ll (revision 97982a8c605fac7c86d02e641a6cd7898b3ca343)

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -verify-machineinstrs < %s | FileCheck %s
; A collection of basic functionality tests for statepoint lowering - most
; interesting cornercases are exercised through the x86 tests.

target datalayout = "e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "riscv64"

%struct = type { i64, i64 }

declare zeroext i1 @return_i1()
declare zeroext i32 @return_i32()
declare ptr @return_i32ptr()
declare float @return_float()
declare %struct @return_struct()
declare void @varargf(i32, ...)

define i1 @test_i1_return() gc "statepoint-example" {
; CHECK-LABEL: test_i1_return:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    addi sp, sp, -16
; CHECK-NEXT:    .cfi_def_cfa_offset 16
; CHECK-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
; CHECK-NEXT:    .cfi_offset ra, -8
; CHECK-NEXT:    call return_i1
; CHECK-NEXT:  .Ltmp0:
; CHECK-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
; CHECK-NEXT:    .cfi_restore ra
; CHECK-NEXT:    addi sp, sp, 16
; CHECK-NEXT:    .cfi_def_cfa_offset 0
; CHECK-NEXT:    ret
; This is just checking that a i1 gets lowered normally when there's no extra
; state arguments to the statepoint
entry:
  %safepoint_token = tail call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(i1 ()) @return_i1, i32 0, i32 0, i32 0, i32 0)
  %call1 = call zeroext i1 @llvm.experimental.gc.result.i1(token %safepoint_token)
  ret i1 %call1
}

define i32 @test_i32_return() gc "statepoint-example" {
; CHECK-LABEL: test_i32_return:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    addi sp, sp, -16
; CHECK-NEXT:    .cfi_def_cfa_offset 16
; CHECK-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
; CHECK-NEXT:    .cfi_offset ra, -8
; CHECK-NEXT:    call return_i32
; CHECK-NEXT:  .Ltmp1:
; CHECK-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
; CHECK-NEXT:    .cfi_restore ra
; CHECK-NEXT:    addi sp, sp, 16
; CHECK-NEXT:    .cfi_def_cfa_offset 0
; CHECK-NEXT:    ret
entry:
  %safepoint_token = tail call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(i32 ()) @return_i32, i32 0, i32 0, i32 0, i32 0)
  %call1 = call zeroext i32 @llvm.experimental.gc.result.i32(token %safepoint_token)
  ret i32 %call1
}

define ptr @test_i32ptr_return() gc "statepoint-example" {
; CHECK-LABEL: test_i32ptr_return:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    addi sp, sp, -16
; CHECK-NEXT:    .cfi_def_cfa_offset 16
; CHECK-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
; CHECK-NEXT:    .cfi_offset ra, -8
; CHECK-NEXT:    call return_i32ptr
; CHECK-NEXT:  .Ltmp2:
; CHECK-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
; CHECK-NEXT:    .cfi_restore ra
; CHECK-NEXT:    addi sp, sp, 16
; CHECK-NEXT:    .cfi_def_cfa_offset 0
; CHECK-NEXT:    ret
entry:
  %safepoint_token = tail call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(ptr ()) @return_i32ptr, i32 0, i32 0, i32 0, i32 0)
  %call1 = call ptr @llvm.experimental.gc.result.p0(token %safepoint_token)
  ret ptr %call1
}

define float @test_float_return() gc "statepoint-example" {
; CHECK-LABEL: test_float_return:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    addi sp, sp, -16
; CHECK-NEXT:    .cfi_def_cfa_offset 16
; CHECK-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
; CHECK-NEXT:    .cfi_offset ra, -8
; CHECK-NEXT:    call return_float
; CHECK-NEXT:  .Ltmp3:
; CHECK-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
; CHECK-NEXT:    .cfi_restore ra
; CHECK-NEXT:    addi sp, sp, 16
; CHECK-NEXT:    .cfi_def_cfa_offset 0
; CHECK-NEXT:    ret
entry:
  %safepoint_token = tail call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(float ()) @return_float, i32 0, i32 0, i32 0, i32 0)
  %call1 = call float @llvm.experimental.gc.result.f32(token %safepoint_token)
  ret float %call1
}

define %struct @test_struct_return() gc "statepoint-example" {
; CHECK-LABEL: test_struct_return:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    addi sp, sp, -16
; CHECK-NEXT:    .cfi_def_cfa_offset 16
; CHECK-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
; CHECK-NEXT:    .cfi_offset ra, -8
; CHECK-NEXT:    call return_struct
; CHECK-NEXT:  .Ltmp4:
; CHECK-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
; CHECK-NEXT:    .cfi_restore ra
; CHECK-NEXT:    addi sp, sp, 16
; CHECK-NEXT:    .cfi_def_cfa_offset 0
; CHECK-NEXT:    ret
entry:
  %safepoint_token = tail call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(%struct ()) @return_struct, i32 0, i32 0, i32 0, i32 0)
  %call1 = call %struct @llvm.experimental.gc.result.struct(token %safepoint_token)
  ret %struct %call1
}

define i1 @test_relocate(ptr addrspace(1) %a) gc "statepoint-example" {
; CHECK-LABEL: test_relocate:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    addi sp, sp, -16
; CHECK-NEXT:    .cfi_def_cfa_offset 16
; CHECK-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
; CHECK-NEXT:    .cfi_offset ra, -8
; CHECK-NEXT:    sd a0, 0(sp)
; CHECK-NEXT:    call return_i1
; CHECK-NEXT:  .Ltmp5:
; CHECK-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
; CHECK-NEXT:    .cfi_restore ra
; CHECK-NEXT:    addi sp, sp, 16
; CHECK-NEXT:    .cfi_def_cfa_offset 0
; CHECK-NEXT:    ret
; Check that an ununsed relocate has no code-generation impact
entry:
  %safepoint_token = tail call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(i1 ()) @return_i1, i32 0, i32 0, i32 0, i32 0) ["gc-live" (ptr addrspace(1) %a)]
  %call1 = call ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token %safepoint_token,  i32 0, i32 0)
  %call2 = call zeroext i1 @llvm.experimental.gc.result.i1(token %safepoint_token)
  ret i1 %call2
}

define void @test_void_vararg() gc "statepoint-example" {
; CHECK-LABEL: test_void_vararg:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    addi sp, sp, -16
; CHECK-NEXT:    .cfi_def_cfa_offset 16
; CHECK-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
; CHECK-NEXT:    .cfi_offset ra, -8
; CHECK-NEXT:    li a0, 42
; CHECK-NEXT:    li a1, 43
; CHECK-NEXT:    call varargf
; CHECK-NEXT:  .Ltmp6:
; CHECK-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
; CHECK-NEXT:    .cfi_restore ra
; CHECK-NEXT:    addi sp, sp, 16
; CHECK-NEXT:    .cfi_def_cfa_offset 0
; CHECK-NEXT:    ret
; Check a statepoint wrapping a *ptr returning vararg function works
entry:
  %safepoint_token = tail call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(void (i32, ...)) @varargf, i32 2, i32 0, i32 42, i32 43, i32 0, i32 0)
  ;; if we try to use the result from a statepoint wrapping a
  ;; non-void-returning varargf, we will experience a crash.
  ret void
}

define i1 @test_i1_return_patchable() gc "statepoint-example" {
; CHECK-LABEL: test_i1_return_patchable:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    addi sp, sp, -16
; CHECK-NEXT:    .cfi_def_cfa_offset 16
; CHECK-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
; CHECK-NEXT:    .cfi_offset ra, -8
; CHECK-NEXT:    nop
; CHECK-NEXT:  .Ltmp7:
; CHECK-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
; CHECK-NEXT:    .cfi_restore ra
; CHECK-NEXT:    addi sp, sp, 16
; CHECK-NEXT:    .cfi_def_cfa_offset 0
; CHECK-NEXT:    ret
; A patchable variant of test_i1_return
entry:
  %safepoint_token = tail call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 4, ptr elementtype(i1 ()) null, i32 0, i32 0, i32 0, i32 0)
  %call1 = call zeroext i1 @llvm.experimental.gc.result.i1(token %safepoint_token)
  ret i1 %call1
}

declare void @consume(ptr addrspace(1) %obj)

define i1 @test_cross_bb(ptr addrspace(1) %a, i1 %external_cond) gc "statepoint-example" {
; CHECK-LABEL: test_cross_bb:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    addi sp, sp, -32
; CHECK-NEXT:    .cfi_def_cfa_offset 32
; CHECK-NEXT:    sd ra, 24(sp) # 8-byte Folded Spill
; CHECK-NEXT:    sd s0, 16(sp) # 8-byte Folded Spill
; CHECK-NEXT:    .cfi_offset ra, -8
; CHECK-NEXT:    .cfi_offset s0, -16
; CHECK-NEXT:    andi s0, a1, 1
; CHECK-NEXT:    sd a0, 8(sp)
; CHECK-NEXT:    call return_i1
; CHECK-NEXT:  .Ltmp8:
; CHECK-NEXT:    beqz s0, .LBB8_2
; CHECK-NEXT:  # %bb.1: # %left
; CHECK-NEXT:    ld a1, 8(sp)
; CHECK-NEXT:    mv s0, a0
; CHECK-NEXT:    mv a0, a1
; CHECK-NEXT:    call consume
; CHECK-NEXT:    mv a0, s0
; CHECK-NEXT:    j .LBB8_3
; CHECK-NEXT:  .LBB8_2: # %right
; CHECK-NEXT:    li a0, 1
; CHECK-NEXT:  .LBB8_3: # %right
; CHECK-NEXT:    ld ra, 24(sp) # 8-byte Folded Reload
; CHECK-NEXT:    ld s0, 16(sp) # 8-byte Folded Reload
; CHECK-NEXT:    .cfi_restore ra
; CHECK-NEXT:    .cfi_restore s0
; CHECK-NEXT:    addi sp, sp, 32
; CHECK-NEXT:    .cfi_def_cfa_offset 0
; CHECK-NEXT:    ret
entry:
  %safepoint_token = tail call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(i1 ()) @return_i1, i32 0, i32 0, i32 0, i32 0) ["gc-live" (ptr addrspace(1) %a)]
  br i1 %external_cond, label %left, label %right

left:
  %call1 = call ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token %safepoint_token,  i32 0, i32 0)
  %call2 = call zeroext i1 @llvm.experimental.gc.result.i1(token %safepoint_token)
  call void @consume(ptr addrspace(1) %call1)
  ret i1 %call2

right:
  ret i1 true
}

%struct2 = type { i64, i64, i64 }

declare void @consume_attributes(i32, ptr nest, i32, ptr byval(%struct2))

define void @test_attributes(ptr byval(%struct2) %s) gc "statepoint-example" {
; CHECK-LABEL: test_attributes:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    addi sp, sp, -32
; CHECK-NEXT:    .cfi_def_cfa_offset 32
; CHECK-NEXT:    sd ra, 24(sp) # 8-byte Folded Spill
; CHECK-NEXT:    .cfi_offset ra, -8
; CHECK-NEXT:    ld a1, 16(a0)
; CHECK-NEXT:    sd a1, 16(sp)
; CHECK-NEXT:    ld a1, 8(a0)
; CHECK-NEXT:    sd a1, 8(sp)
; CHECK-NEXT:    ld a0, 0(a0)
; CHECK-NEXT:    sd a0, 0(sp)
; CHECK-NEXT:    li a0, 42
; CHECK-NEXT:    li a1, 17
; CHECK-NEXT:    mv a2, sp
; CHECK-NEXT:    li t2, 0
; CHECK-NEXT:    call consume_attributes
; CHECK-NEXT:  .Ltmp9:
; CHECK-NEXT:    ld ra, 24(sp) # 8-byte Folded Reload
; CHECK-NEXT:    .cfi_restore ra
; CHECK-NEXT:    addi sp, sp, 32
; CHECK-NEXT:    .cfi_def_cfa_offset 0
; CHECK-NEXT:    ret
entry:
; Check that arguments with attributes are lowered correctly.
; We call a function that has a nest argument and a byval argument.
  %statepoint_token = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(void (i32, ptr, i32, ptr)) @consume_attributes, i32 4, i32 0, i32 42, ptr nest null, i32 17, ptr byval(%struct2) %s, i32 0, i32 0)
  ret void
}

declare token @llvm.experimental.gc.statepoint.p0(i64, i32, ptr, i32, i32, ...)
declare i1 @llvm.experimental.gc.result.i1(token)

declare i32 @llvm.experimental.gc.result.i32(token)

declare ptr @llvm.experimental.gc.result.p0(token)

declare float @llvm.experimental.gc.result.f32(token)

declare %struct @llvm.experimental.gc.result.struct(token)



declare ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token, i32, i32)