94cc4a29ed
This initial patch doesn't actually do much useful. It's just to show where the new code goes. Once this is in, I'll extend the verification logic to check more useful properties. For those curious, the more complicated version of this patch already found one very suspicious thing. Differential Revision: https://reviews.llvm.org/D33819 llvm-svn: 304564
148 lines
3.6 KiB
LLVM
148 lines
3.6 KiB
LLVM
; RUN: llc -verify-machineinstrs < %s | FileCheck %s
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; Check that we can lower a use of an alloca both as a deopt value (where the
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; exact meaning is up to the consumer of the stackmap) and as an explicit spill
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; slot used for GC.
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target datalayout = "e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-linux-gnu"
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declare zeroext i1 @return_i1()
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; Can we handle an explicit relocation slot (in the form of an alloca) given
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; to the statepoint?
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define i32 addrspace(1)* @test(i32 addrspace(1)* %ptr) gc "statepoint-example" {
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; CHECK-LABEL: test
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; CHECK: pushq %rax
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; CHECK: movq %rdi, (%rsp)
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; CHECK: callq return_i1
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; CHECK: movq (%rsp), %rax
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; CHECK: popq %rcx
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; CHECK: retq
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entry:
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%alloca = alloca i32 addrspace(1)*, align 8
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store i32 addrspace(1)* %ptr, i32 addrspace(1)** %alloca
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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, i32 addrspace(1)** %alloca)
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%rel = load i32 addrspace(1)*, i32 addrspace(1)** %alloca
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ret i32 addrspace(1)* %rel
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}
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; Can we handle an alloca as a deopt value?
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define i32 addrspace(1)* @test2(i32 addrspace(1)* %ptr) gc "statepoint-example" {
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; CHECK-LABEL: test2
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; CHECK: pushq %rax
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; CHECK: movq %rdi, (%rsp)
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; CHECK: callq return_i1
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; CHECK: xorl %eax, %eax
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; CHECK: popq %rcx
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; CHECK: retq
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entry:
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%alloca = alloca i32 addrspace(1)*, align 8
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store i32 addrspace(1)* %ptr, i32 addrspace(1)** %alloca
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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 1, i32 addrspace(1)** %alloca)
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ret i32 addrspace(1)* null
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}
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declare token @llvm.experimental.gc.statepoint.p0f_i1f(i64, i32, i1 ()*, i32, i32, ...)
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; CHECK-LABEL: .section .llvm_stackmaps
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; CHECK-NEXT: __LLVM_StackMaps:
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; Header
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; CHECK-NEXT: .byte 3
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .short 0
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; Num Functions
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; CHECK-NEXT: .long 2
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; Num LargeConstants
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; CHECK-NEXT: .long 0
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; Num Callsites
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; CHECK-NEXT: .long 2
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; Functions and stack size
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; CHECK-NEXT: .quad test
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; CHECK-NEXT: .quad 8
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; CHECK-NEXT: .quad 1
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; CHECK-NEXT: .quad test2
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; CHECK-NEXT: .quad 8
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; CHECK-NEXT: .quad 1
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; Large Constants
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; Statepoint ID only
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; CHECK: .quad 0
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; Callsites
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; The GC one
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; CHECK: .long .Ltmp0-test
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; CHECK: .short 0
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; CHECK: .short 4
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; SmallConstant (0)
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; CHECK: .byte 4
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; CHECK: .byte 0
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; CHECK: .short 8
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; CHECK: .short 0
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; CHECK: .short 0
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; CHECK: .long 0
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; SmallConstant (0)
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; CHECK: .byte 4
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; CHECK: .byte 0
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; CHECK: .short 8
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; CHECK: .short 0
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; CHECK: .short 0
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; CHECK: .long 0
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; SmallConstant (0)
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; CHECK: .byte 4
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; CHECK: .byte 0
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; CHECK: .short 8
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; CHECK: .short 0
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; CHECK: .short 0
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; CHECK: .long 0
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; Direct Spill Slot [RSP+0]
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; CHECK: .byte 2
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; CHECK: .byte 0
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; CHECK: .short 8
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; CHECK: .short 7
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; CHECK: .short 0
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; CHECK: .long 0
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; No Padding or LiveOuts
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; CHECK: .short 0
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; CHECK: .short 0
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; CHECK: .p2align 3
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; The Deopt one
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; CHECK: .long .Ltmp1-test2
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; CHECK: .short 0
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; CHECK: .short 4
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; SmallConstant (0)
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; CHECK: .byte 4
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; CHECK: .byte 0
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; CHECK: .short 8
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; CHECK: .short 0
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; CHECK: .short 0
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; CHECK: .long 0
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; SmallConstant (0)
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; CHECK: .byte 4
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; CHECK: .byte 0
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; CHECK: .short 8
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; CHECK: .short 0
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; CHECK: .short 0
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; CHECK: .long 0
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; SmallConstant (1)
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; CHECK: .byte 4
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; CHECK: .byte 0
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; CHECK: .short 8
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; CHECK: .short 0
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; CHECK: .short 0
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; CHECK: .long 1
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; Direct Spill Slot [RSP+0]
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; CHECK: .byte 2
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; CHECK: .byte 0
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; CHECK: .short 8
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; CHECK: .short 7
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; CHECK: .short 0
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; CHECK: .long 0
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; No Padding or LiveOuts
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; CHECK: .short 0
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; CHECK: .short 0
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; CHECK: .p2align 3
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