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.
78 lines
3.8 KiB
LLVM
78 lines
3.8 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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; Check that we can export values of "duplicated" gc.relocates without a crash
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; "duplicate" here means maps to same SDValue. We previously had an
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; optimization which tried to reduce number of spills/stackmap entries in such
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; cases, but it incorrectly handled exports across basis block boundaries
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; leading to a crash in this case.
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target triple = "x86_64-pc-linux-gnu"
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declare void @func()
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define i1 @test() gc "statepoint-example" {
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; CHECK-LABEL: test:
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; CHECK: # %bb.0: # %entry
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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 func
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; CHECK-NEXT: .Ltmp0:
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; CHECK-NEXT: callq func
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; CHECK-NEXT: .Ltmp1:
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; CHECK-NEXT: movb $1, %al
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; CHECK-NEXT: popq %rcx
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; CHECK-NEXT: .cfi_def_cfa_offset 8
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; CHECK-NEXT: retq
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entry:
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%safepoint_token = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @func, i32 0, i32 0, i32 0, i32 0) ["gc-live" (i32 addrspace(1)* null, i32 addrspace(1)* null)]
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%base = call i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(token %safepoint_token, i32 0, i32 0)
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%derived = call i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(token %safepoint_token, i32 0, i32 1)
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%safepoint_token2 = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @func, i32 0, i32 0, i32 0, i32 0) ["gc-live" (i32 addrspace(1)* %base, i32 addrspace(1)* %derived)]
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br label %next
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next:
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%base_reloc = call i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(token %safepoint_token2, i32 0, i32 0)
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%derived_reloc = call i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(token %safepoint_token2, i32 0, i32 1)
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%cmp1 = icmp eq i32 addrspace(1)* %base_reloc, null
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%cmp2 = icmp eq i32 addrspace(1)* %derived_reloc, null
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%cmp = and i1 %cmp1, %cmp2
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ret i1 %cmp
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}
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; Showing redundant fill on first statepoint and spill/fill on second one
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define i1 @test2(i32 addrspace(1)* %arg) gc "statepoint-example" {
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; CHECK-LABEL: test2:
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; CHECK: # %bb.0: # %entry
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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 func
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; CHECK-NEXT: .Ltmp2:
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; CHECK-NEXT: callq func
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; CHECK-NEXT: .Ltmp3:
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; CHECK-NEXT: cmpq $0, (%rsp)
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; CHECK-NEXT: sete %al
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; CHECK-NEXT: popq %rcx
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; CHECK-NEXT: .cfi_def_cfa_offset 8
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; CHECK-NEXT: retq
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entry:
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%safepoint_token = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @func, i32 0, i32 0, i32 0, i32 0) ["gc-live" (i32 addrspace(1)* %arg, i32 addrspace(1)* %arg)]
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%base = call i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(token %safepoint_token, i32 0, i32 0)
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%derived = call i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(token %safepoint_token, i32 0, i32 1)
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%safepoint_token2 = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @func, i32 0, i32 0, i32 0, i32 0) ["gc-live" (i32 addrspace(1)* %base, i32 addrspace(1)* %derived)]
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br label %next
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next:
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%base_reloc = call i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(token %safepoint_token2, i32 0, i32 0)
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%derived_reloc = call i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(token %safepoint_token2, i32 0, i32 1)
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%cmp1 = icmp eq i32 addrspace(1)* %base_reloc, null
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%cmp2 = icmp eq i32 addrspace(1)* %derived_reloc, null
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%cmp = and i1 %cmp1, %cmp2
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ret i1 %cmp
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}
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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)
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