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|
--- |
; RUN: llc --run-pass=machinelicm -sink-insts-to-avoid-spills %s -o - | FileCheck %s --match-full-lines
; CHECK-LABEL: bb.4 (%ir-block.9):
; CHECK: %0:gr64 = nuw ADD64ri8 %9, 4, implicit-def dead $eflags
;
; When instructions are sunk to prevent register spills, line numbers should not be retained.
target triple = "x86_64-unknown-linux-gnu"
%struct.A = type { i32, i32, i32, i32, i32, i32 }
define void @p(i8* nocapture readonly %input, %struct.A* %a) !dbg !10 {
%1 = getelementptr inbounds %struct.A, %struct.A* %a, i64 0, i32 1, !dbg !18
%2 = getelementptr inbounds %struct.A, %struct.A* %a, i64 0, i32 2
%3 = getelementptr inbounds %struct.A, %struct.A* %a, i64 0, i32 3
%4 = getelementptr inbounds %struct.A, %struct.A* %a, i64 0, i32 4
%5 = getelementptr inbounds %struct.A, %struct.A* %a, i64 0, i32 5
%scevgep = getelementptr i8, i8* %input, i64 1
br label %.backedge
.backedge: ; preds = %.backedge.backedge, %0
%lsr.iv = phi i8* [ %scevgep1, %.backedge.backedge ], [ %scevgep, %0 ]
%6 = load i8, i8* %lsr.iv, align 1
switch i8 %6, label %.backedge.backedge [
i8 0, label %7
i8 10, label %9
i8 20, label %10
i8 30, label %11
i8 40, label %12
i8 50, label %13
]
7: ; preds = %.backedge
%8 = bitcast %struct.A* %a to i32*
tail call void @f(i32* %8)
br label %.backedge.backedge
9: ; preds = %.backedge
tail call void @f(i32* %1)
br label %.backedge.backedge
.backedge.backedge: ; preds = %13, %12, %11, %10, %9, %7, %.backedge
%scevgep1 = getelementptr i8, i8* %lsr.iv, i64 1
br label %.backedge
10: ; preds = %.backedge
tail call void @f(i32* %2)
br label %.backedge.backedge
11: ; preds = %.backedge
tail call void @f(i32* %3)
br label %.backedge.backedge
12: ; preds = %.backedge
tail call void @f(i32* %4)
br label %.backedge.backedge
13: ; preds = %.backedge
tail call void @f(i32* %5)
br label %.backedge.backedge
}
declare void @f(i32*)
; Function Attrs: nounwind
declare void @llvm.stackprotector(i8*, i8**)
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!7, !8}
!llvm.ident = !{!9}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 10.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
!1 = !DIFile(filename: "t.ll", directory: "tmp/X86")
!2 = !{}
!3 = !{!4}
!4 = !DIGlobalVariableExpression(var: !5, expr: !DIExpression())
!5 = !DIGlobalVariable(name: "x", scope: !0, file: !1, line: 1, type: !6, isLocal: false, isDefinition: true)
!6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!7 = !{i32 2, !"Dwarf Version", i32 4}
!8 = !{i32 2, !"Debug Info Version", i32 3}
!9 = !{!"clang version 10.0.0 "}
!10 = distinct !DISubprogram(name: "p", scope: !1, file: !1, line: 2, type: !11, scopeLine: 3, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !16)
!11 = !DISubroutineType(types: !12)
!12 = !{null, !13}
!13 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !14, size: 64)
!14 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !15)
!15 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)
!16 = !{!17}
!17 = !DILocalVariable(name: "a", arg: 1, scope: !10, file: !1, line: 2, type: !15)
!18 = !DILocation(line: 4, column: 3, scope: !10)
...
---
name: p
tracksRegLiveness: true
registers:
- { id: 0, class: gr64, preferred-register: '' }
- { id: 1, class: gr64, preferred-register: '' }
- { id: 2, class: gr64, preferred-register: '' }
- { id: 3, class: gr64, preferred-register: '' }
- { id: 4, class: gr64, preferred-register: '' }
- { id: 5, class: gr64, preferred-register: '' }
- { id: 6, class: gr64, preferred-register: '' }
- { id: 7, class: gr64, preferred-register: '' }
- { id: 8, class: gr64, preferred-register: '' }
- { id: 9, class: gr64, preferred-register: '' }
- { id: 10, class: gr64_nosp, preferred-register: '' }
- { id: 11, class: gr32, preferred-register: '' }
- { id: 12, class: gr64, preferred-register: '' }
- { id: 13, class: gr64, preferred-register: '' }
- { id: 14, class: gr64, preferred-register: '' }
- { id: 15, class: gr64, preferred-register: '' }
jumpTable:
kind: label-difference32
entries:
- id: 0
blocks: [ '%bb.2', '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4',
'%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.3', '%bb.4',
'%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4',
'%bb.4', '%bb.4', '%bb.5', '%bb.4', '%bb.4', '%bb.4',
'%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4',
'%bb.6', '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4',
'%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.7', '%bb.4',
'%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4',
'%bb.4', '%bb.4', '%bb.8' ]
body: |
bb.0 (%ir-block.0):
successors: %bb.1(0x80000000)
liveins: $rdi, $rsi
%9:gr64 = COPY $rsi
%8:gr64 = COPY $rdi
%0:gr64 = nuw ADD64ri8 %9, 4, implicit-def dead $eflags, debug-location !18
%1:gr64 = nuw ADD64ri8 %9, 8, implicit-def dead $eflags
%2:gr64 = nuw ADD64ri8 %9, 12, implicit-def dead $eflags
%3:gr64 = nuw ADD64ri8 %9, 16, implicit-def dead $eflags
%4:gr64 = nuw ADD64ri8 %9, 20, implicit-def dead $eflags
%5:gr64 = INC64r %8, implicit-def dead $eflags
bb.1..backedge:
successors: %bb.4(0x09249249), %bb.9(0x76db6db7)
%6:gr64 = PHI %5, %bb.0, %7, %bb.4
%11:gr32 = MOVZX32rm8 %6, 1, $noreg, 0, $noreg :: (load 1 from %ir.lsr.iv)
%10:gr64_nosp = SUBREG_TO_REG 0, killed %11, %subreg.sub_32bit
%12:gr64 = SUB64ri8 %10, 50, implicit-def $eflags
JCC_1 %bb.4, 7, implicit $eflags
bb.9..backedge:
successors: %bb.2(0x13b13b14), %bb.4(0x09d89d8a), %bb.3(0x13b13b14), %bb.5(0x13b13b14), %bb.6(0x13b13b14), %bb.7(0x13b13b14), %bb.8(0x13b13b14)
%13:gr64 = LEA64r $rip, 1, $noreg, %jump-table.0, $noreg
%14:gr64 = MOVSX64rm32 %13, 4, %10, 0, $noreg :: (load 4 from jump-table)
%15:gr64 = ADD64rr %14, %13, implicit-def dead $eflags
JMP64r killed %15
bb.2 (%ir-block.7):
successors: %bb.4(0x80000000)
ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
$rdi = COPY %9
CALL64pcrel32 target-flags(x86-plt) @f, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp
ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
JMP_1 %bb.4
bb.3 (%ir-block.9):
successors: %bb.4(0x80000000)
ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
$rdi = COPY %0
CALL64pcrel32 target-flags(x86-plt) @f, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp
ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
bb.4..backedge.backedge:
successors: %bb.1(0x80000000)
%7:gr64 = INC64r %6, implicit-def dead $eflags
JMP_1 %bb.1
bb.5 (%ir-block.10):
successors: %bb.4(0x80000000)
ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
$rdi = COPY %1
CALL64pcrel32 target-flags(x86-plt) @f, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp
ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
JMP_1 %bb.4
bb.6 (%ir-block.11):
successors: %bb.4(0x80000000)
ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
$rdi = COPY %2
CALL64pcrel32 target-flags(x86-plt) @f, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp
ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
JMP_1 %bb.4
bb.7 (%ir-block.12):
successors: %bb.4(0x80000000)
ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
$rdi = COPY %3
CALL64pcrel32 target-flags(x86-plt) @f, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp
ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
JMP_1 %bb.4
bb.8 (%ir-block.13):
successors: %bb.4(0x80000000)
ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
$rdi = COPY %4
CALL64pcrel32 target-flags(x86-plt) @f, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp
ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
JMP_1 %bb.4
...
|
