110 lines
5.3 KiB
LLVM
110 lines
5.3 KiB
LLVM
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; RUN: llc < %s | FileCheck %s
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; C source:
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; void usethings(double *, void *p);
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; int realign_and_alloca(int n) {
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; double d = 0;
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; void *p = __builtin_alloca(n);
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; usethings(&d, p);
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; return 0;
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; }
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; CHECK: _realign_and_alloca: # @realign_and_alloca
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; CHECK: .cv_fpo_proc _realign_and_alloca 4
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; CHECK: pushl %ebp
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; CHECK: .cv_fpo_pushreg %ebp
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; CHECK: movl %esp, %ebp
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; CHECK: .cv_fpo_setframe %ebp
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; CHECK: pushl %esi
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; CHECK: .cv_fpo_pushreg %esi
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; CHECK: andl $-16, %esp
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; CHECK: .cv_fpo_stackalign 16
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; CHECK: subl $32, %esp
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; CHECK: .cv_fpo_stackalloc 32
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; CHECK: .cv_fpo_endprologue
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; CHECK: movl %esp, %esi
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; CHECK: leal 8(%esi),
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; CHECK: calll _usethings
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; CHECK: addl $8, %esp
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; CHECK: xorl %eax, %eax
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; CHECK: leal -4(%ebp), %esp
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; CHECK: popl %esi
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; CHECK: popl %ebp
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; CHECK: retl
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; CHECK: .cv_fpo_endproc
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; ModuleID = 't.c'
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source_filename = "t.c"
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target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
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target triple = "i386-pc-windows-msvc19.11.25508"
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; Function Attrs: nounwind
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define i32 @realign_and_alloca(i32 %n) local_unnamed_addr #0 !dbg !8 {
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entry:
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%d = alloca double, align 8
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tail call void @llvm.dbg.value(metadata i32 %n, metadata !13, metadata !DIExpression()), !dbg !18
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%0 = bitcast double* %d to i8*, !dbg !19
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call void @llvm.lifetime.start.p0i8(i64 8, i8* nonnull %0) #4, !dbg !19
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tail call void @llvm.dbg.value(metadata double 0.000000e+00, metadata !14, metadata !DIExpression()), !dbg !20
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store double 0.000000e+00, double* %d, align 8, !dbg !20, !tbaa !21
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%1 = alloca i8, i32 %n, align 16, !dbg !25
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tail call void @llvm.dbg.value(metadata i8* %1, metadata !16, metadata !DIExpression()), !dbg !26
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tail call void @llvm.dbg.value(metadata double* %d, metadata !14, metadata !DIExpression()), !dbg !20
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call void @usethings(double* nonnull %d, i8* nonnull %1) #4, !dbg !27
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call void @llvm.lifetime.end.p0i8(i64 8, i8* nonnull %0) #4, !dbg !28
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ret i32 0, !dbg !29
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}
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; Function Attrs: argmemonly nounwind
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declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
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declare void @usethings(double*, i8*) local_unnamed_addr #2
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; Function Attrs: argmemonly nounwind
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declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #1
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.value(metadata, metadata, metadata) #3
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attributes #0 = { nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="pentium4" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { argmemonly nounwind }
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attributes #2 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="pentium4" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #3 = { nounwind readnone speculatable }
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attributes #4 = { nounwind }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5, !6}
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!llvm.ident = !{!7}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "t.c", directory: "C:\5Csrc\5Cllvm-project\5Cbuild", checksumkind: CSK_MD5, checksum: "cfdc2deff5dc50f95e287f877660d4dd")
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!2 = !{}
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!3 = !{i32 1, !"NumRegisterParameters", i32 0}
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!4 = !{i32 2, !"CodeView", i32 1}
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!5 = !{i32 2, !"Debug Info Version", i32 3}
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!6 = !{i32 1, !"wchar_size", i32 2}
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!7 = !{!"clang version 6.0.0 "}
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!8 = distinct !DISubprogram(name: "realign_and_alloca", scope: !1, file: !1, line: 2, type: !9, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !12)
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!9 = !DISubroutineType(types: !10)
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!10 = !{!11, !11}
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!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!12 = !{!13, !14, !16}
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!13 = !DILocalVariable(name: "n", arg: 1, scope: !8, file: !1, line: 2, type: !11)
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!14 = !DILocalVariable(name: "d", scope: !8, file: !1, line: 3, type: !15)
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!15 = !DIBasicType(name: "double", size: 64, encoding: DW_ATE_float)
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!16 = !DILocalVariable(name: "p", scope: !8, file: !1, line: 4, type: !17)
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!17 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 32)
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!18 = !DILocation(line: 2, column: 28, scope: !8)
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!19 = !DILocation(line: 3, column: 3, scope: !8)
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!20 = !DILocation(line: 3, column: 10, scope: !8)
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!21 = !{!22, !22, i64 0}
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!22 = !{!"double", !23, i64 0}
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!23 = !{!"omnipotent char", !24, i64 0}
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!24 = !{!"Simple C/C++ TBAA"}
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!25 = !DILocation(line: 4, column: 13, scope: !8)
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!26 = !DILocation(line: 4, column: 9, scope: !8)
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!27 = !DILocation(line: 5, column: 3, scope: !8)
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!28 = !DILocation(line: 7, column: 1, scope: !8)
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!29 = !DILocation(line: 6, column: 3, scope: !8)
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