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statepoint-allocas.ll
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statepoint-allocas.ll
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -verify-machineinstrs -debug-entry-values < %s | FileCheck %s
; Check that we can lower a use of an alloca both as a deopt value (where the
; exact meaning is up to the consumer of the stackmap) and as an explicit spill
; slot used for GC.
target datalayout = "e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-linux-gnu"
declare zeroext i1 @return_i1()
; Can we handle an explicit relocation slot (in the form of an alloca) given
; to the statepoint?
define i32 addrspace(1)* @test(i32 addrspace(1)* %ptr) gc "statepoint-example" {
; CHECK-LABEL: test:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: pushq %rax
; CHECK-NEXT: .cfi_def_cfa_offset 16
; CHECK-NEXT: movq %rdi, (%rsp)
; CHECK-NEXT: callq return_i1
; CHECK-NEXT: .Ltmp0:
; CHECK-NEXT: movq (%rsp), %rax
; CHECK-NEXT: popq %rcx
; CHECK-NEXT: .cfi_def_cfa_offset 8
; CHECK-NEXT: retq
entry:
%alloca = alloca i32 addrspace(1)*, align 8
store i32 addrspace(1)* %ptr, i32 addrspace(1)** %alloca
call token (i64, i32, i1 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i1f(i64 0, i32 0, i1 ()* @return_i1, i32 0, i32 0, i32 0, i32 0) ["gc-live" (i32 addrspace(1)** %alloca)]
%rel = load i32 addrspace(1)*, i32 addrspace(1)** %alloca
ret i32 addrspace(1)* %rel
}
; Can we handle an alloca as a deopt value?
define i32 addrspace(1)* @test2(i32 addrspace(1)* %ptr) gc "statepoint-example" {
; CHECK-LABEL: test2:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: pushq %rax
; CHECK-NEXT: .cfi_def_cfa_offset 16
; CHECK-NEXT: movq %rdi, (%rsp)
; CHECK-NEXT: callq return_i1
; CHECK-NEXT: .Ltmp1:
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: popq %rcx
; CHECK-NEXT: .cfi_def_cfa_offset 8
; CHECK-NEXT: retq
entry:
%alloca = alloca i32 addrspace(1)*, align 8
store i32 addrspace(1)* %ptr, i32 addrspace(1)** %alloca
call token (i64, i32, i1 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i1f(i64 0, i32 0, i1 ()* @return_i1, i32 0, i32 0, i32 0, i32 0) ["deopt" (i32 addrspace(1)** %alloca)]
ret i32 addrspace(1)* null
}
declare token @llvm.experimental.gc.statepoint.p0f_i1f(i64, i32, i1 ()*, i32, i32, ...)
; CHECK-LABEL: .section .llvm_stackmaps
; CHECK-NEXT: __LLVM_StackMaps:
; Header
; CHECK-NEXT: .byte 3
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .short 0
; Num Functions
; CHECK-NEXT: .long 2
; Num LargeConstants
; CHECK-NEXT: .long 0
; Num Callsites
; CHECK-NEXT: .long 2
; Functions and stack size
; CHECK-NEXT: .quad test
; CHECK-NEXT: .quad 8
; CHECK-NEXT: .quad 1
; CHECK-NEXT: .quad test2
; CHECK-NEXT: .quad 8
; CHECK-NEXT: .quad 1
; Large Constants
; Statepoint ID only
; CHECK: .quad 0
; Callsites
; The GC one
; CHECK: .long .Ltmp0-test
; CHECK: .short 0
; CHECK: .short 4
; SmallConstant (0)
; CHECK: .byte 4
; CHECK: .byte 0
; CHECK: .short 8
; CHECK: .short 0
; CHECK: .short 0
; CHECK: .long 0
; SmallConstant (0)
; CHECK: .byte 4
; CHECK: .byte 0
; CHECK: .short 8
; CHECK: .short 0
; CHECK: .short 0
; CHECK: .long 0
; SmallConstant (0)
; CHECK: .byte 4
; CHECK: .byte 0
; CHECK: .short 8
; CHECK: .short 0
; CHECK: .short 0
; CHECK: .long 0
; Direct Spill Slot [rsp+0]
; CHECK: .byte 2
; CHECK: .byte 0
; CHECK: .short 8
; CHECK: .short 7
; CHECK: .short 0
; CHECK: .long 0
; No Padding or LiveOuts
; CHECK: .short 0
; CHECK: .short 0
; CHECK: .p2align 3
; The Deopt one
; CHECK: .long .Ltmp1-test2
; CHECK: .short 0
; CHECK: .short 4
; SmallConstant (0)
; CHECK: .byte 4
; CHECK: .byte 0
; CHECK: .short 8
; CHECK: .short 0
; CHECK: .short 0
; CHECK: .long 0
; SmallConstant (0)
; CHECK: .byte 4
; CHECK: .byte 0
; CHECK: .short 8
; CHECK: .short 0
; CHECK: .short 0
; CHECK: .long 0
; SmallConstant (1)
; CHECK: .byte 4
; CHECK: .byte 0
; CHECK: .short 8
; CHECK: .short 0
; CHECK: .short 0
; CHECK: .long 1
; Direct Spill Slot [rsp+0]
; CHECK: .byte 2
; CHECK: .byte 0
; CHECK: .short 8
; CHECK: .short 7
; CHECK: .short 0
; CHECK: .long 0
; No Padding or LiveOuts
; CHECK: .short 0
; CHECK: .short 0
; CHECK: .p2align 3