derek.holloway
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91 lines
4.3 KiB
LLVM
91 lines
4.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
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; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx90a < %s | FileCheck %s
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; Test mempcy lowering where length is given by a complex but constant expression.
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; Loop guard should not be necessary since length is positive.
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@src_array = global [128 x i8] zeroinitializer, align 1
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@dst_array = global [128 x i8] zeroinitializer, align 1
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define amdgpu_kernel void @_start() {
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; CHECK-LABEL: _start:
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; CHECK: ; %bb.0:
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; CHECK-NEXT: s_add_u32 flat_scratch_lo, s12, s17
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; CHECK-NEXT: s_addc_u32 flat_scratch_hi, s13, 0
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; CHECK-NEXT: s_mov_b64 s[0:1], 0
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; CHECK-NEXT: .LBB0_1: ; %dynamic-memcpy-expansion-main-body
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; CHECK-NEXT: ; =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: s_getpc_b64 s[2:3]
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; CHECK-NEXT: s_add_u32 s2, s2, src_array@gotpcrel32@lo+4
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; CHECK-NEXT: s_addc_u32 s3, s3, src_array@gotpcrel32@hi+12
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; CHECK-NEXT: s_load_dwordx2 s[2:3], s[2:3], 0x0
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; CHECK-NEXT: s_waitcnt lgkmcnt(0)
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; CHECK-NEXT: s_add_u32 s2, s2, s0
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; CHECK-NEXT: s_addc_u32 s3, s3, s1
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; CHECK-NEXT: v_pk_mov_b32 v[0:1], s[2:3], s[2:3] op_sel:[0,1]
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; CHECK-NEXT: flat_load_dwordx4 v[2:5], v[0:1]
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; CHECK-NEXT: s_getpc_b64 s[2:3]
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; CHECK-NEXT: s_add_u32 s2, s2, dst_array@gotpcrel32@lo+4
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; CHECK-NEXT: s_addc_u32 s3, s3, dst_array@gotpcrel32@hi+12
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; CHECK-NEXT: s_load_dwordx2 s[2:3], s[2:3], 0x0
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; CHECK-NEXT: s_waitcnt lgkmcnt(0)
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; CHECK-NEXT: s_add_u32 s2, s2, s0
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; CHECK-NEXT: s_addc_u32 s3, s3, s1
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; CHECK-NEXT: s_add_u32 s0, s0, 16
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; CHECK-NEXT: s_addc_u32 s1, s1, 0
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; CHECK-NEXT: v_pk_mov_b32 v[0:1], s[2:3], s[2:3] op_sel:[0,1]
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; CHECK-NEXT: v_cmp_lt_u64_e64 s[2:3], s[0:1], 16
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; CHECK-NEXT: s_and_b64 vcc, exec, s[2:3]
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; CHECK-NEXT: s_waitcnt vmcnt(0)
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; CHECK-NEXT: flat_store_dwordx4 v[0:1], v[2:5]
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; CHECK-NEXT: s_cbranch_vccnz .LBB0_1
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; CHECK-NEXT: ; %bb.2: ; %dynamic-memcpy-expansion-residual-cond
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; FIXME: Compare should be evaluated at compile time
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; CHECK-NEXT: s_cmp_eq_u64 13, 0
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; CHECK-NEXT: s_cbranch_scc1 .LBB0_5
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; CHECK-NEXT: ; %bb.3: ; %dynamic-memcpy-expansion-residual-body.preheader
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; CHECK-NEXT: s_sub_u32 s4, 29, 13
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; CHECK-NEXT: s_subb_u32 s5, 0, 0
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; CHECK-NEXT: s_getpc_b64 s[0:1]
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; CHECK-NEXT: s_add_u32 s0, s0, src_array@gotpcrel32@lo+4
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; CHECK-NEXT: s_addc_u32 s1, s1, src_array@gotpcrel32@hi+12
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; CHECK-NEXT: s_load_dwordx2 s[0:1], s[0:1], 0x0
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; CHECK-NEXT: s_waitcnt lgkmcnt(0)
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; CHECK-NEXT: s_add_u32 s2, s0, s4
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; CHECK-NEXT: s_addc_u32 s3, s1, s5
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; CHECK-NEXT: s_getpc_b64 s[0:1]
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; CHECK-NEXT: s_add_u32 s0, s0, dst_array@gotpcrel32@lo+4
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; CHECK-NEXT: s_addc_u32 s1, s1, dst_array@gotpcrel32@hi+12
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; CHECK-NEXT: s_load_dwordx2 s[0:1], s[0:1], 0x0
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; CHECK-NEXT: s_waitcnt lgkmcnt(0)
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; CHECK-NEXT: s_add_u32 s4, s0, s4
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; CHECK-NEXT: s_addc_u32 s5, s1, s5
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; CHECK-NEXT: s_mov_b64 s[0:1], 0
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; CHECK-NEXT: .LBB0_4: ; %dynamic-memcpy-expansion-residual-body
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; CHECK-NEXT: ; =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: s_add_u32 s6, s2, s0
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; CHECK-NEXT: s_addc_u32 s7, s3, s1
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; CHECK-NEXT: v_pk_mov_b32 v[0:1], s[6:7], s[6:7] op_sel:[0,1]
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; CHECK-NEXT: flat_load_ubyte v2, v[0:1]
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; CHECK-NEXT: s_add_u32 s6, s4, s0
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; CHECK-NEXT: s_addc_u32 s7, s5, s1
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; CHECK-NEXT: s_add_u32 s0, s0, 1
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; CHECK-NEXT: s_addc_u32 s1, s1, 0
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; CHECK-NEXT: v_pk_mov_b32 v[0:1], s[6:7], s[6:7] op_sel:[0,1]
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; CHECK-NEXT: v_cmp_lt_u64_e64 s[6:7], s[0:1], 13
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; CHECK-NEXT: s_and_b64 vcc, exec, s[6:7]
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; CHECK-NEXT: s_waitcnt vmcnt(0) lgkmcnt(0)
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; CHECK-NEXT: flat_store_byte v[0:1], v2
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; CHECK-NEXT: s_cbranch_vccnz .LBB0_4
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; CHECK-NEXT: .LBB0_5: ; %dynamic-memcpy-post-expansion
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; CHECK-NEXT: s_endpgm
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%src_ptr = getelementptr inbounds [128 x i8], ptr @src_array, i64 0, i64 0
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%dst_ptr = getelementptr inbounds [128 x i8], ptr @dst_array, i64 0, i64 0
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call void @llvm.memcpy.p0.p0.i64(ptr %dst_ptr, ptr %src_ptr, i64 add (i64 sub (i64 16, i64 ptrtoint (ptr addrspacecast (ptr addrspace(4) null to ptr) to i64)), i64 13), i1 false)
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ret void
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}
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declare void @llvm.memcpy.p0.p4.i64(ptr noalias writeonly captures(none), ptr addrspace(4) noalias readonly captures(none), i64, i1 immarg) #0
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attributes #0 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
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