37 lines
967 B
LLVM
37 lines
967 B
LLVM
; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -o - %s | FileCheck -check-prefix=GCN %s
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; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 --amdhsa-code-object-version=5 -o - %s | FileCheck -check-prefix=GCN-V5 %s
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; Make sure there's no assertion when trying to report the resource
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; usage for a function which becomes dead during codegen.
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@gv.fptr0 = external hidden unnamed_addr addrspace(4) constant void()*, align 4
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; GCN-LABEL: unreachable:
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; Function info:
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; codeLenInByte = 4
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define internal fastcc void @unreachable() {
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%fptr = load void()*, void()* addrspace(4)* @gv.fptr0
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call void %fptr()
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unreachable
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}
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; GCN-LABEL: entry:
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; GCN-NOT: s_swappc_b64
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; GCN: s_endpgm
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; GCN: .amdhsa_private_segment_fixed_size 0
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; GCN: .amdhsa_uses_dynamic_stack 0
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; GCN-V5: .amdhsa_uses_dynamic_stack 0
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define amdgpu_kernel void @entry() {
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bb0:
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br i1 false, label %bb1, label %bb2
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bb1:
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tail call fastcc void @unreachable()
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unreachable
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bb2:
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ret void
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}
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