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GlobalISel: Always enable GISelKnownBits for InstructionSelect
This wasn't running at -O0, and causing crashes for AMDGPU. AMDGPU needs this to match the addressing modes of stack access instructions, which is even more important at -O0 than with optimizations. It currently costs nothing to run ahead of time, so just always enable it.
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25 changes: 25 additions & 0 deletions
25
llvm/test/CodeGen/AMDGPU/GlobalISel/crash-stack-address-O0.ll
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Original file line number | Diff line number | Diff line change |
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py | ||
; RUN: llc -global-isel -O0 -mtriple=amdgcn-amd-amdhsa -mcpu=fiji -o - %s | FileCheck %s | ||
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; Make sure there's no crash at -O0 when matching MUBUF addressing | ||
; modes for the stack. | ||
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define amdgpu_kernel void @stack_write_fi() { | ||
; CHECK-LABEL: stack_write_fi: | ||
; CHECK: ; %bb.0: ; %entry | ||
; CHECK-NEXT: s_add_u32 s0, s0, s7 | ||
; CHECK-NEXT: s_addc_u32 s1, s1, 0 | ||
; CHECK-NEXT: s_mov_b32 s5, 0 | ||
; CHECK-NEXT: s_mov_b32 s4, 0 | ||
; CHECK-NEXT: v_mov_b32_e32 v0, s5 | ||
; CHECK-NEXT: buffer_store_dword v0, off, s[0:3], 0 offset:4 | ||
; CHECK-NEXT: s_waitcnt vmcnt(0) | ||
; CHECK-NEXT: v_mov_b32_e32 v0, s4 | ||
; CHECK-NEXT: buffer_store_dword v0, off, s[0:3], 0 offset:8 | ||
; CHECK-NEXT: s_waitcnt vmcnt(0) | ||
; CHECK-NEXT: s_endpgm | ||
entry: | ||
%alloca = alloca i64, align 4, addrspace(5) | ||
store volatile i64 0, i64 addrspace(5)* %alloca, align 4 | ||
ret void | ||
} |
1 change: 1 addition & 0 deletions
1
llvm/test/CodeGen/AMDGPU/GlobalISel/inst-select-load-private.mir
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llvm/test/CodeGen/AMDGPU/GlobalISel/inst-select-store-private.mir
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