95 lines
4.1 KiB
LLVM
95 lines
4.1 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -verify-machineinstrs < %s | FileCheck %s
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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 void @use(...)
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declare void @f()
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declare token @llvm.experimental.gc.statepoint.p0f_isVoidf(i64, i32, void ()*, i32, i32, ...)
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declare i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(token, i32, i32) #3
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declare i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token, i32, i32) #3
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;; Two gc.relocates of the same input, should require only a single spill/fill
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define void @test_gcrelocate_uniqueing(i32 addrspace(1)* %ptr) gc "statepoint-example" {
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; CHECK-LABEL: test_gcrelocate_uniqueing:
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; CHECK: # %bb.0:
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; CHECK-NEXT: pushq %rax
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: movq %rdi, (%rsp)
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; CHECK-NEXT: callq f
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; CHECK-NEXT: .Ltmp0:
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; CHECK-NEXT: movq (%rsp), %rdi
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; CHECK-NEXT: movq %rdi, %rsi
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; CHECK-NEXT: xorl %eax, %eax
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; CHECK-NEXT: callq use
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; CHECK-NEXT: popq %rax
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; CHECK-NEXT: .cfi_def_cfa_offset 8
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; CHECK-NEXT: retq
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%tok = tail call token (i64, i32, void ()*, i32, i32, ...)
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@llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @f, i32 0, i32 0, i32 0, i32 0) ["gc-live" (i32 addrspace(1)* %ptr, i32 addrspace(1)* %ptr), "deopt" (i32 addrspace(1)* %ptr, i32 undef)]
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%a = call i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(token %tok, i32 0, i32 0)
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%b = call i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(token %tok, i32 1, i32 1)
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call void (...) @use(i32 addrspace(1)* %a, i32 addrspace(1)* %b)
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ret void
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}
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;; Two gc.relocates of a bitcasted pointer should only require a single spill/fill
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define void @test_gcptr_uniqueing(i32 addrspace(1)* %ptr) gc "statepoint-example" {
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; CHECK-LABEL: test_gcptr_uniqueing:
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; CHECK: # %bb.0:
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; CHECK-NEXT: pushq %rax
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: movq %rdi, (%rsp)
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; CHECK-NEXT: callq f
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; CHECK-NEXT: .Ltmp1:
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; CHECK-NEXT: movq (%rsp), %rdi
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; CHECK-NEXT: movq %rdi, %rsi
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; CHECK-NEXT: xorl %eax, %eax
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; CHECK-NEXT: callq use
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; CHECK-NEXT: popq %rax
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; CHECK-NEXT: .cfi_def_cfa_offset 8
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; CHECK-NEXT: retq
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%ptr2 = bitcast i32 addrspace(1)* %ptr to i8 addrspace(1)*
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%tok = tail call token (i64, i32, void ()*, i32, i32, ...)
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@llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @f, i32 0, i32 0, i32 0, i32 0) ["gc-live" (i32 addrspace(1)* %ptr, i8 addrspace(1)* %ptr2), "deopt" (i32 addrspace(1)* %ptr, i32 undef)]
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%a = call i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(token %tok, i32 0, i32 0)
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%b = call i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token %tok, i32 1, i32 1)
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call void (...) @use(i32 addrspace(1)* %a, i8 addrspace(1)* %b)
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ret void
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}
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;; A GC value is not dead, and does need to be spill (but not filed) if
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;; that same value is also in the deopt list.
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define void @test_deopt_use(i32 addrspace(1)* %ptr) gc "statepoint-example" {
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; CHECK-LABEL: test_deopt_use:
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; CHECK: # %bb.0:
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; CHECK-NEXT: pushq %rax
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: movq %rdi, (%rsp)
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; CHECK-NEXT: callq f
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; CHECK-NEXT: .Ltmp2:
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; CHECK-NEXT: popq %rax
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; CHECK-NEXT: .cfi_def_cfa_offset 8
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; CHECK-NEXT: retq
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tail call token (i64, i32, void ()*, i32, i32, ...)
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@llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @f, i32 0, i32 0, i32 0, i32 0) ["gc-live" (i32 addrspace(1)* %ptr), "deopt" (i32 addrspace(1)* %ptr, i32 undef)]
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ret void
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}
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;; A GC value which is truely unused does not need to spilled or filled.
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define void @test_dse(i32 addrspace(1)* %ptr) gc "statepoint-example" {
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; CHECK-LABEL: test_dse:
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; CHECK: # %bb.0:
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; CHECK-NEXT: pushq %rax
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: callq f
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; CHECK-NEXT: .Ltmp3:
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; CHECK-NEXT: popq %rax
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; CHECK-NEXT: .cfi_def_cfa_offset 8
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; CHECK-NEXT: retq
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tail call token (i64, i32, void ()*, i32, i32, ...)
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@llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @f, i32 0, i32 0, i32 0, i32 0) ["gc-live" (i32 addrspace(1)* %ptr)]
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ret void
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}
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