2e17bba324
For context of anyone following along, we've not completed the migration of statepoint to the operand bundle form. The only remaining piece is to actually version the statepoint intrinsic to remove the old inline operand sets. That will follow when I have some time; delay is useful here to allow downstream migrations.
95 lines
4.1 KiB
LLVM
95 lines
4.1 KiB
LLVM
; 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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