1# We do not support call site parameters when the machine instructions loading a value 2# into the forwarding register has a memory operand and multiple defs. 3# The generated code was modified a bit in order to have the scenario. 4# 5# RUN: llc -emit-call-site-info -debug-entry-values -start-after=machineverifier -filetype=obj %s -o - \ 6# RUN: | llvm-dwarfdump - | FileCheck %s --implicit-check-not=DW_TAG_GNU_call_site_parameter 7# 8# Command: clang -g -O2 -Xclang -femit-debug-entry-values test.c 9# -mllvm -stop-before=machineverifier -o test.mir -c 10# extern void callee(int); 11# extern int y; 12# 13# #define FORCE_SPILL() \ 14# asm volatile("" \ 15# : \ 16# : \ 17# : "rax", "rbx", "rcx", "rdx", "rsi", "rdi", "rbp", "r8", "r9", \ 18# "r10", "r11", "r12", "r13", "r14", "r15") 19# 20# __attribute__((disable_tail_calls)) void caller(int x) { 21# FORCE_SPILL(); 22# x = x % y; 23# callee(x); 24# } 25# 26--- | 27 ; ModuleID = 'test.c' 28 source_filename = "test.c" 29 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 30 target triple = "x86_64-unknown-linux-gnu" 31 32 @y = external dso_local local_unnamed_addr global i32, align 4 33 34 ; Function Attrs: nounwind uwtable 35 define dso_local void @caller(i32 %x) local_unnamed_addr !dbg !12 { 36 entry: 37 call void @llvm.dbg.value(metadata i32 %x, metadata !14, metadata !DIExpression()), !dbg !15 38 call void asm sideeffect "", "~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15},~{dirflag},~{fpsr},~{flags}"(), !dbg !16, !srcloc !17 39 %0 = load i32, i32* @y, align 4, !dbg !18 40 %rem = srem i32 %x, %0, !dbg !18 41 call void @llvm.dbg.value(metadata i32 %rem, metadata !14, metadata !DIExpression()), !dbg !15 42 call void @callee(i32 %rem), !dbg !18 43 ret void, !dbg !18 44 } 45 46 declare !dbg !4 dso_local void @callee(i32) local_unnamed_addr 47 48 ; Function Attrs: nounwind readnone speculatable willreturn 49 declare void @llvm.dbg.value(metadata, metadata, metadata) 50 51 !llvm.dbg.cu = !{!0} 52 !llvm.module.flags = !{!8, !9, !10} 53 !llvm.ident = !{!11} 54 55 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 11.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, splitDebugInlining: false, nameTableKind: None) 56 !1 = !DIFile(filename: "test.c", directory: "/") 57 !2 = !{} 58 !3 = !{!4} 59 !4 = !DISubprogram(name: "callee", scope: !1, file: !1, line: 1, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2) 60 !5 = !DISubroutineType(types: !6) 61 !6 = !{null, !7} 62 !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 63 !8 = !{i32 7, !"Dwarf Version", i32 4} 64 !9 = !{i32 2, !"Debug Info Version", i32 3} 65 !10 = !{i32 1, !"wchar_size", i32 4} 66 !11 = !{!"clang version 11.0.0"} 67 !12 = distinct !DISubprogram(name: "caller", scope: !1, file: !1, line: 11, type: !5, scopeLine: 11, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !13) 68 !13 = !{!14} 69 !14 = !DILocalVariable(name: "x", arg: 1, scope: !12, file: !1, line: 11, type: !7) 70 !15 = !DILocation(line: 0, scope: !12) 71 !16 = !DILocation(line: 12, column: 4, scope: !12) 72 !17 = !{i32 -2147471651} 73 !18 = !DILocation(line: 13, column: 12, scope: !12) 74 75... 76--- 77name: caller 78alignment: 16 79stack: 80 - { id: 0, name: '', type: spill-slot, offset: -60, size: 4, alignment: 4, 81 stack-id: default, callee-saved-register: '', callee-saved-restored: true, 82 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } 83callSites: 84 - { bb: 0, offset: 30, fwdArgRegs: 85 - { arg: 0, reg: '$edi' } } 86body: | 87 bb.0.entry: 88 liveins: $edi, $rbp, $r15, $r14, $r13, $r12, $rbx 89 90 DBG_VALUE $edi, $noreg, !14, !DIExpression(), debug-location !15 91 frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp 92 CFI_INSTRUCTION def_cfa_offset 16 93 frame-setup PUSH64r killed $r15, implicit-def $rsp, implicit $rsp 94 CFI_INSTRUCTION def_cfa_offset 24 95 frame-setup PUSH64r killed $r14, implicit-def $rsp, implicit $rsp 96 CFI_INSTRUCTION def_cfa_offset 32 97 frame-setup PUSH64r killed $r13, implicit-def $rsp, implicit $rsp 98 CFI_INSTRUCTION def_cfa_offset 40 99 frame-setup PUSH64r killed $r12, implicit-def $rsp, implicit $rsp 100 CFI_INSTRUCTION def_cfa_offset 48 101 frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp 102 CFI_INSTRUCTION def_cfa_offset 56 103 frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp 104 CFI_INSTRUCTION def_cfa_offset 64 105 CFI_INSTRUCTION offset $rbx, -56 106 CFI_INSTRUCTION offset $r12, -48 107 CFI_INSTRUCTION offset $r13, -40 108 CFI_INSTRUCTION offset $r14, -32 109 CFI_INSTRUCTION offset $r15, -24 110 CFI_INSTRUCTION offset $rbp, -16 111 MOV32mr $rsp, 1, $noreg, 4, $noreg, $edi :: (store 4 into %stack.0) 112 DBG_VALUE $rsp, 0, !14, !DIExpression(DW_OP_plus_uconst, 4), debug-location !15 113 INLINEASM &"", 1, 12, implicit-def dead early-clobber $rax, 12, implicit-def dead early-clobber $rbx, 12, implicit-def dead early-clobber $rcx, 12, implicit-def dead early-clobber $rdx, 12, implicit-def dead early-clobber $rsi, 12, implicit-def dead early-clobber $rdi, 12, implicit-def dead early-clobber $rbp, 12, implicit-def dead early-clobber $r8, 12, implicit-def dead early-clobber $r9, 12, implicit-def dead early-clobber $r10, 12, implicit-def dead early-clobber $r11, 12, implicit-def dead early-clobber $r12, 12, implicit-def dead early-clobber $r13, 12, implicit-def dead early-clobber $r14, 12, implicit-def dead early-clobber $r15, 12, implicit-def dead early-clobber $df, 12, implicit-def early-clobber $fpsw, 12, implicit-def dead early-clobber $eflags, !17, debug-location !16 114 $eax = MOV32rm $rsp, 1, $noreg, 4, $noreg :: (load 4 from %stack.0) 115 DBG_VALUE $eax, $noreg, !14, !DIExpression(), debug-location !15 116 CDQ implicit-def $eax, implicit-def $edx, implicit $eax, debug-location !18 117 DIV64m $rsp, 1, $noreg, 24, $noreg, implicit-def dead $rax, implicit-def $rdx, implicit-def dead $eflags, implicit $rax, implicit $rdx, debug-location !18 :: (load 8 from %stack.0) 118 $edi = MOV32rr $edx, debug-location !18 119 DBG_VALUE $edi, $noreg, !14, !DIExpression(), debug-location !15 120 CALL64pcrel32 @callee, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit-def $rsp, implicit-def $ssp, debug-location !18 121 $rsp = frame-destroy ADD64ri8 $rsp, 8, implicit-def dead $eflags, debug-location !18 122 CFI_INSTRUCTION def_cfa_offset 56, debug-location !18 123 $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !18 124 CFI_INSTRUCTION def_cfa_offset 48, debug-location !18 125 $r12 = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !18 126 CFI_INSTRUCTION def_cfa_offset 40, debug-location !18 127 $r13 = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !18 128 CFI_INSTRUCTION def_cfa_offset 32, debug-location !18 129 $r14 = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !18 130 CFI_INSTRUCTION def_cfa_offset 24, debug-location !18 131 $r15 = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !18 132 CFI_INSTRUCTION def_cfa_offset 16, debug-location !18 133 $rbp = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !18 134 CFI_INSTRUCTION def_cfa_offset 8, debug-location !18 135 RETQ debug-location !18 136 137... 138