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02f664086c
The addend in a REL32 reloc needs to be adjusted to account for the offset from the PC value returned by the s_getpc instruction to the point where the reloc is applied. This was being done correctly for (GOTPC)REL32_LO but not for (GOTPC)REL32_HI. This will only make a difference if the target symbol happens to get loaded almost exactly a multiple of 4G away from the relocated instructions. Differential Revision: https://reviews.llvm.org/D86938
24 lines
991 B
YAML
24 lines
991 B
YAML
# RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -start-after=livedebugvalues -verify-machineinstrs -o - %s | FileCheck -check-prefix=GCN %s
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# GCN-LABEL: foo:
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# GCN: s_getpc_b64 vcc
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# GCN: s_add_u32 vcc_lo, vcc_lo, bar@rel32@lo+4
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# GCN: s_addc_u32 vcc_hi, vcc_hi, bar@rel32@hi+12
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--- |
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define amdgpu_kernel void @foo() {
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ret void
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}
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@bar = external protected local_unnamed_addr addrspace(4) externally_initialized global i32, align 4
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---
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name: foo
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tracksRegLiveness: true
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frameInfo:
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hasCalls: true
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body: |
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bb.0:
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BUNDLE implicit-def $vcc, implicit-def $vcc_lo, implicit-def $vcc_lo_lo16, implicit-def $vcc_lo_hi16, implicit-def $vcc_hi, implicit-def $vcc_hi_lo16, implicit-def $vcc_hi_hi16, implicit-def $scc {
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$vcc = S_GETPC_B64
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$vcc_lo = S_ADD_U32 internal $vcc_lo, target-flags(amdgpu-rel32-lo) @bar + 4, implicit-def $scc
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$vcc_hi = S_ADDC_U32 internal $vcc_hi, target-flags(amdgpu-rel32-hi) @bar + 12, implicit-def $scc, implicit internal $scc
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}
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