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d135f14f61
When coalescing with a physreg, remember to add imp-def and imp-kill when dealing with sub-registers. Also fix a related bug in VirtRegRewriter where substitutePhysReg may reallocate the operand list on an instruction and invalidate the reg_iterator. This can happen when a register is mentioned twice on the same instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96072 91177308-0d34-0410-b5e6-96231b3b80d8
261 lines
15 KiB
LLVM
261 lines
15 KiB
LLVM
; RUN: llc < %s > %t
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; PR6283
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; Tricky coalescer bug:
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; After coalescing %RAX with a virtual register, this instruction was rematted:
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;
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; %EAX<def> = MOV32rr %reg1070<kill>
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;
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; This instruction silently defined %RAX, and when rematting removed the
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; instruction, the live interval for %RAX was not properly updated. The valno
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; referred to a deleted instruction and bad things happened.
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;
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; The fix is to implicitly define %RAX when coalescing:
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;
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; %EAX<def> = MOV32rr %reg1070<kill>, %RAX<imp-def>
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;
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
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target triple = "x86_64-unknown-linux-gnu"
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module asm "\09.ident\09\22GCC: (GNU) 4.5.0 20100212 (experimental) LLVM: 95975\22"
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%0 = type { %"union gimple_statement_d"* }
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%"BITMAP_WORD[]" = type [2 x i64]
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%"char[]" = type [4 x i8]
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%"enum dom_state[]" = type [2 x i32]
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%"int[]" = type [4 x i32]
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%"struct VEC_basic_block_base" = type { i32, i32, [1 x %"struct basic_block_def"*] }
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%"struct VEC_basic_block_gc" = type { %"struct VEC_basic_block_base" }
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%"struct VEC_edge_base" = type { i32, i32, [1 x %"struct edge_def"*] }
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%"struct VEC_edge_gc" = type { %"struct VEC_edge_base" }
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%"struct VEC_gimple_base" = type { i32, i32, [1 x %"union gimple_statement_d"*] }
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%"struct VEC_gimple_gc" = type { %"struct VEC_gimple_base" }
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%"struct VEC_iv_cand_p_base" = type { i32, i32, [1 x %"struct iv_cand"*] }
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%"struct VEC_iv_cand_p_heap" = type { %"struct VEC_iv_cand_p_base" }
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%"struct VEC_iv_use_p_base" = type { i32, i32, [1 x %"struct iv_use"*] }
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%"struct VEC_iv_use_p_heap" = type { %"struct VEC_iv_use_p_base" }
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%"struct VEC_loop_p_base" = type { i32, i32, [1 x %"struct loop"*] }
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%"struct VEC_loop_p_gc" = type { %"struct VEC_loop_p_base" }
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%"struct VEC_rtx_base" = type { i32, i32, [1 x %"struct rtx_def"*] }
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%"struct VEC_rtx_gc" = type { %"struct VEC_rtx_base" }
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%"struct VEC_tree_base" = type { i32, i32, [1 x %"union tree_node"*] }
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%"struct VEC_tree_gc" = type { %"struct VEC_tree_base" }
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%"struct _obstack_chunk" = type { i8*, %"struct _obstack_chunk"*, %"char[]" }
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%"struct basic_block_def" = type { %"struct VEC_edge_gc"*, %"struct VEC_edge_gc"*, i8*, %"struct loop"*, [2 x %"struct et_node"*], %"struct basic_block_def"*, %"struct basic_block_def"*, %"union basic_block_il_dependent", i64, i32, i32, i32, i32, i32 }
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%"struct bitmap_element" = type { %"struct bitmap_element"*, %"struct bitmap_element"*, i32, %"BITMAP_WORD[]" }
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%"struct bitmap_head_def" = type { %"struct bitmap_element"*, %"struct bitmap_element"*, i32, %"struct bitmap_obstack"* }
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%"struct bitmap_obstack" = type { %"struct bitmap_element"*, %"struct bitmap_head_def"*, %"struct obstack" }
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%"struct block_symbol" = type { [3 x %"union rtunion"], %"struct object_block"*, i64 }
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%"struct comp_cost" = type { i32, i32 }
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%"struct control_flow_graph" = type { %"struct basic_block_def"*, %"struct basic_block_def"*, %"struct VEC_basic_block_gc"*, i32, i32, i32, %"struct VEC_basic_block_gc"*, i32, %"enum dom_state[]", %"enum dom_state[]", i32, i32 }
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%"struct cost_pair" = type { %"struct iv_cand"*, %"struct comp_cost", %"struct bitmap_head_def"*, %"union tree_node"* }
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%"struct def_optype_d" = type { %"struct def_optype_d"*, %"union tree_node"** }
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%"struct double_int" = type { i64, i64 }
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%"struct edge_def" = type { %"struct basic_block_def"*, %"struct basic_block_def"*, %"union edge_def_insns", i8*, %"union tree_node"*, i32, i32, i32, i32, i64 }
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%"struct eh_status" = type opaque
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%"struct et_node" = type opaque
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%"struct function" = type { %"struct eh_status"*, %"struct control_flow_graph"*, %"struct gimple_seq_d"*, %"struct gimple_df"*, %"struct loops"*, %"struct htab"*, %"union tree_node"*, %"union tree_node"*, %"union tree_node"*, %"union tree_node"*, %"struct machine_function"*, %"struct language_function"*, %"struct htab"*, i32, i32, i32, i32, i32, i32, i8*, i8, i8, i8, i8 }
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%"struct gimple_bb_info" = type { %"struct gimple_seq_d"*, %"struct gimple_seq_d"* }
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%"struct gimple_df" = type { %"struct htab"*, %"struct VEC_gimple_gc"*, %"struct VEC_tree_gc"*, %"union tree_node"*, %"struct pt_solution", %"struct pt_solution", %"struct pointer_map_t"*, %"union tree_node"*, %"struct htab"*, %"struct bitmap_head_def"*, i8, %"struct ssa_operands" }
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%"struct gimple_seq_d" = type { %"struct gimple_seq_node_d"*, %"struct gimple_seq_node_d"*, %"struct gimple_seq_d"* }
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%"struct gimple_seq_node_d" = type { %"union gimple_statement_d"*, %"struct gimple_seq_node_d"*, %"struct gimple_seq_node_d"* }
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%"struct gimple_statement_base" = type { i8, i8, i16, i32, i32, i32, %"struct basic_block_def"*, %"union tree_node"* }
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%"struct gimple_statement_phi" = type { %"struct gimple_statement_base", i32, i32, %"union tree_node"*, %"struct phi_arg_d[]" }
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%"struct htab" = type { i32 (i8*)*, i32 (i8*, i8*)*, void (i8*)*, i8**, i64, i64, i64, i32, i32, i8* (i64, i64)*, void (i8*)*, i8*, i8* (i8*, i64, i64)*, void (i8*, i8*)*, i32 }
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%"struct iv" = type { %"union tree_node"*, %"union tree_node"*, %"union tree_node"*, %"union tree_node"*, i8, i8, i32 }
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%"struct iv_cand" = type { i32, i8, i32, %"union gimple_statement_d"*, %"union tree_node"*, %"union tree_node"*, %"struct iv"*, i32, i32, %"struct iv_use"*, %"struct bitmap_head_def"* }
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%"struct iv_use" = type { i32, i32, %"struct iv"*, %"union gimple_statement_d"*, %"union tree_node"**, %"struct bitmap_head_def"*, i32, %"struct cost_pair"*, %"struct iv_cand"* }
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%"struct ivopts_data" = type { %"struct loop"*, %"struct pointer_map_t"*, i32, i32, %"struct version_info"*, %"struct bitmap_head_def"*, %"struct VEC_iv_use_p_heap"*, %"struct VEC_iv_cand_p_heap"*, %"struct bitmap_head_def"*, i32, i8, i8 }
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%"struct lang_decl" = type opaque
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%"struct language_function" = type opaque
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%"struct loop" = type { i32, i32, %"struct basic_block_def"*, %"struct basic_block_def"*, %"struct comp_cost", i32, i32, %"struct VEC_loop_p_gc"*, %"struct loop"*, %"struct loop"*, i8*, %"union tree_node"*, %"struct double_int", %"struct double_int", i8, i8, i32, %"struct nb_iter_bound"*, %"struct loop_exit"*, i8, %"union tree_node"* }
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%"struct loop_exit" = type { %"struct edge_def"*, %"struct loop_exit"*, %"struct loop_exit"*, %"struct loop_exit"* }
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%"struct loops" = type { i32, %"struct VEC_loop_p_gc"*, %"struct htab"*, %"struct loop"* }
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%"struct machine_cfa_state" = type { %"struct rtx_def"*, i64 }
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%"struct machine_function" = type { %"struct stack_local_entry"*, i8*, i32, i32, %"int[]", i32, %"struct machine_cfa_state", i32, i8 }
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%"struct nb_iter_bound" = type { %"union gimple_statement_d"*, %"struct double_int", i8, %"struct nb_iter_bound"* }
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%"struct object_block" = type { %"union section"*, i32, i64, %"struct VEC_rtx_gc"*, %"struct VEC_rtx_gc"* }
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%"struct obstack" = type { i64, %"struct _obstack_chunk"*, i8*, i8*, i8*, i64, i32, %"struct _obstack_chunk"* (i8*, i64)*, void (i8*, %"struct _obstack_chunk"*)*, i8*, i8 }
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%"struct phi_arg_d" = type { %"struct ssa_use_operand_d", %"union tree_node"*, i32 }
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%"struct phi_arg_d[]" = type [1 x %"struct phi_arg_d"]
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%"struct pointer_map_t" = type opaque
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%"struct pt_solution" = type { i8, %"struct bitmap_head_def"* }
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%"struct rtx_def" = type { i16, i8, i8, %"union u" }
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%"struct section_common" = type { i32 }
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%"struct ssa_operand_memory_d" = type { %"struct ssa_operand_memory_d"*, %"uchar[]" }
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%"struct ssa_operands" = type { %"struct ssa_operand_memory_d"*, i32, i32, i8, %"struct def_optype_d"*, %"struct use_optype_d"* }
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%"struct ssa_use_operand_d" = type { %"struct ssa_use_operand_d"*, %"struct ssa_use_operand_d"*, %0, %"union tree_node"** }
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%"struct stack_local_entry" = type opaque
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%"struct tree_base" = type <{ i16, i8, i8, i8, [2 x i8], i8 }>
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%"struct tree_common" = type { %"struct tree_base", %"union tree_node"*, %"union tree_node"* }
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%"struct tree_decl_common" = type { %"struct tree_decl_minimal", %"union tree_node"*, i8, i8, i8, i8, i8, i32, %"union tree_node"*, %"union tree_node"*, %"union tree_node"*, %"union tree_node"*, %"struct lang_decl"* }
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%"struct tree_decl_minimal" = type { %"struct tree_common", i32, i32, %"union tree_node"*, %"union tree_node"* }
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%"struct tree_decl_non_common" = type { %"struct tree_decl_with_vis", %"union tree_node"*, %"union tree_node"*, %"union tree_node"*, %"union tree_node"* }
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%"struct tree_decl_with_rtl" = type { %"struct tree_decl_common", %"struct rtx_def"* }
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%"struct tree_decl_with_vis" = type { %"struct tree_decl_with_rtl", %"union tree_node"*, %"union tree_node"*, %"union tree_node"*, i8, i8, i8 }
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%"struct tree_function_decl" = type { %"struct tree_decl_non_common", %"struct function"*, %"union tree_node"*, %"union tree_node"*, %"union tree_node"*, i16, i8, i8 }
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%"struct unnamed_section" = type { %"struct section_common", void (i8*)*, i8*, %"union section"* }
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%"struct use_optype_d" = type { %"struct use_optype_d"*, %"struct ssa_use_operand_d" }
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%"struct version_info" = type { %"union tree_node"*, %"struct iv"*, i8, i32, i8 }
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%"uchar[]" = type [1 x i8]
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%"union basic_block_il_dependent" = type { %"struct gimple_bb_info"* }
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%"union edge_def_insns" = type { %"struct gimple_seq_d"* }
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%"union gimple_statement_d" = type { %"struct gimple_statement_phi" }
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%"union rtunion" = type { i8* }
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%"union section" = type { %"struct unnamed_section" }
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%"union tree_node" = type { %"struct tree_function_decl" }
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%"union u" = type { %"struct block_symbol" }
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declare fastcc %"union tree_node"* @get_computation_at(%"struct loop"*, %"struct iv_use"* nocapture, %"struct iv_cand"* nocapture, %"union gimple_statement_d"*) nounwind
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declare fastcc i32 @computation_cost(%"union tree_node"*, i8 zeroext) nounwind
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define fastcc i64 @get_computation_cost_at(%"struct ivopts_data"* %data, %"struct iv_use"* nocapture %use, %"struct iv_cand"* nocapture %cand, i8 zeroext %address_p, %"struct bitmap_head_def"** %depends_on, %"union gimple_statement_d"* %at, i8* %can_autoinc) nounwind {
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entry:
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br i1 undef, label %"100", label %"4"
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"4": ; preds = %entry
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br i1 undef, label %"6", label %"5"
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"5": ; preds = %"4"
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unreachable
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"6": ; preds = %"4"
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br i1 undef, label %"8", label %"7"
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"7": ; preds = %"6"
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unreachable
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"8": ; preds = %"6"
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br i1 undef, label %"100", label %"10"
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"10": ; preds = %"8"
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br i1 undef, label %"17", label %"16"
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"16": ; preds = %"10"
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unreachable
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"17": ; preds = %"10"
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br i1 undef, label %"19", label %"18"
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"18": ; preds = %"17"
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unreachable
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"19": ; preds = %"17"
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br i1 undef, label %"93", label %"20"
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"20": ; preds = %"19"
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br i1 undef, label %"23", label %"21"
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"21": ; preds = %"20"
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unreachable
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"23": ; preds = %"20"
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br i1 undef, label %"100", label %"25"
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"25": ; preds = %"23"
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br i1 undef, label %"100", label %"26"
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"26": ; preds = %"25"
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br i1 undef, label %"30", label %"28"
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"28": ; preds = %"26"
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unreachable
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"30": ; preds = %"26"
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br i1 undef, label %"59", label %"51"
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"51": ; preds = %"30"
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br i1 undef, label %"55", label %"52"
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"52": ; preds = %"51"
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unreachable
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"55": ; preds = %"51"
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%0 = icmp ugt i32 0, undef ; <i1> [#uses=1]
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br i1 %0, label %"50.i", label %"9.i"
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"9.i": ; preds = %"55"
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unreachable
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"50.i": ; preds = %"55"
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br i1 undef, label %"55.i", label %"54.i"
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"54.i": ; preds = %"50.i"
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br i1 undef, label %"57.i", label %"55.i"
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"55.i": ; preds = %"54.i", %"50.i"
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unreachable
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"57.i": ; preds = %"54.i"
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br label %"63.i"
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"61.i": ; preds = %"63.i"
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br i1 undef, label %"64.i", label %"62.i"
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"62.i": ; preds = %"61.i"
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br label %"63.i"
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"63.i": ; preds = %"62.i", %"57.i"
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br i1 undef, label %"61.i", label %"64.i"
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"64.i": ; preds = %"63.i", %"61.i"
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unreachable
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"59": ; preds = %"30"
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br i1 undef, label %"60", label %"82"
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"60": ; preds = %"59"
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br i1 undef, label %"61", label %"82"
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"61": ; preds = %"60"
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br i1 undef, label %"62", label %"82"
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"62": ; preds = %"61"
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br i1 undef, label %"100", label %"63"
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"63": ; preds = %"62"
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br i1 undef, label %"65", label %"64"
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"64": ; preds = %"63"
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unreachable
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"65": ; preds = %"63"
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br i1 undef, label %"66", label %"67"
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"66": ; preds = %"65"
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unreachable
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"67": ; preds = %"65"
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%1 = load i32* undef, align 4 ; <i32> [#uses=0]
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br label %"100"
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"82": ; preds = %"61", %"60", %"59"
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unreachable
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"93": ; preds = %"19"
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%2 = call fastcc %"union tree_node"* @get_computation_at(%"struct loop"* undef, %"struct iv_use"* %use, %"struct iv_cand"* %cand, %"union gimple_statement_d"* %at) nounwind ; <%"union tree_node"*> [#uses=1]
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br i1 undef, label %"100", label %"97"
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"97": ; preds = %"93"
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br i1 undef, label %"99", label %"98"
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"98": ; preds = %"97"
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br label %"99"
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"99": ; preds = %"98", %"97"
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%3 = phi %"union tree_node"* [ undef, %"98" ], [ %2, %"97" ] ; <%"union tree_node"*> [#uses=1]
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%4 = call fastcc i32 @computation_cost(%"union tree_node"* %3, i8 zeroext undef) nounwind ; <i32> [#uses=1]
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br label %"100"
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"100": ; preds = %"99", %"93", %"67", %"62", %"25", %"23", %"8", %entry
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%memtmp1.1.0 = phi i32 [ 0, %"99" ], [ 10000000, %entry ], [ 10000000, %"8" ], [ 10000000, %"23" ], [ 10000000, %"25" ], [ undef, %"62" ], [ undef, %"67" ], [ 10000000, %"93" ] ; <i32> [#uses=1]
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%memtmp1.0.0 = phi i32 [ %4, %"99" ], [ 10000000, %entry ], [ 10000000, %"8" ], [ 10000000, %"23" ], [ 10000000, %"25" ], [ undef, %"62" ], [ undef, %"67" ], [ 10000000, %"93" ] ; <i32> [#uses=1]
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%5 = zext i32 %memtmp1.0.0 to i64 ; <i64> [#uses=1]
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%6 = zext i32 %memtmp1.1.0 to i64 ; <i64> [#uses=1]
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%7 = shl i64 %6, 32 ; <i64> [#uses=1]
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%8 = or i64 %7, %5 ; <i64> [#uses=1]
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ret i64 %8
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}
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