| ; RUN: llc < %s | FileCheck %s |
| |
| ; C source: |
| ; void usethings(double *, void *p); |
| ; int realign_and_alloca(int n) { |
| ; double d = 0; |
| ; void *p = __builtin_alloca(n); |
| ; usethings(&d, p); |
| ; return 0; |
| ; } |
| |
| ; CHECK: _realign_and_alloca: # @realign_and_alloca |
| ; CHECK: .cv_fpo_proc _realign_and_alloca 4 |
| ; CHECK: pushl %ebp |
| ; CHECK: .cv_fpo_pushreg %ebp |
| ; CHECK: movl %esp, %ebp |
| ; CHECK: .cv_fpo_setframe %ebp |
| ; CHECK: pushl %esi |
| ; CHECK: .cv_fpo_pushreg %esi |
| ; We don't seem to need to describe this AND because at this point CSRs |
| ; are stored relative to EBP, but it's suspicious. |
| ; CHECK: andl $-16, %esp |
| ; CHECK: subl $32, %esp |
| ; CHECK: .cv_fpo_stackalloc 32 |
| ; CHECK: .cv_fpo_endprologue |
| ; CHECK: movl %esp, %esi |
| ; CHECK: leal 8(%esi), |
| ; CHECK: calll _usethings |
| ; CHECK: addl $8, %esp |
| ; CHECK: xorl %eax, %eax |
| ; CHECK: leal -4(%ebp), %esp |
| ; CHECK: popl %esi |
| ; CHECK: popl %ebp |
| ; CHECK: retl |
| ; CHECK: .cv_fpo_endproc |
| |
| |
| ; ModuleID = 't.c' |
| source_filename = "t.c" |
| target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32" |
| target triple = "i386-pc-windows-msvc19.11.25508" |
| |
| ; Function Attrs: nounwind |
| define i32 @realign_and_alloca(i32 %n) local_unnamed_addr #0 !dbg !8 { |
| entry: |
| %d = alloca double, align 8 |
| tail call void @llvm.dbg.value(metadata i32 %n, metadata !13, metadata !DIExpression()), !dbg !18 |
| %0 = bitcast double* %d to i8*, !dbg !19 |
| call void @llvm.lifetime.start.p0i8(i64 8, i8* nonnull %0) #4, !dbg !19 |
| tail call void @llvm.dbg.value(metadata double 0.000000e+00, metadata !14, metadata !DIExpression()), !dbg !20 |
| store double 0.000000e+00, double* %d, align 8, !dbg !20, !tbaa !21 |
| %1 = alloca i8, i32 %n, align 16, !dbg !25 |
| tail call void @llvm.dbg.value(metadata i8* %1, metadata !16, metadata !DIExpression()), !dbg !26 |
| tail call void @llvm.dbg.value(metadata double* %d, metadata !14, metadata !DIExpression()), !dbg !20 |
| call void @usethings(double* nonnull %d, i8* nonnull %1) #4, !dbg !27 |
| call void @llvm.lifetime.end.p0i8(i64 8, i8* nonnull %0) #4, !dbg !28 |
| ret i32 0, !dbg !29 |
| } |
| |
| ; Function Attrs: argmemonly nounwind |
| declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1 |
| |
| declare void @usethings(double*, i8*) local_unnamed_addr #2 |
| |
| ; Function Attrs: argmemonly nounwind |
| declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #1 |
| |
| ; Function Attrs: nounwind readnone speculatable |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #3 |
| |
| attributes #0 = { nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "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" } |
| attributes #1 = { argmemonly nounwind } |
| attributes #2 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "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" } |
| attributes #3 = { nounwind readnone speculatable } |
| attributes #4 = { nounwind } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5, !6} |
| !llvm.ident = !{!7} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) |
| !1 = !DIFile(filename: "t.c", directory: "C:\5Csrc\5Cllvm-project\5Cbuild", checksumkind: CSK_MD5, checksum: "cfdc2deff5dc50f95e287f877660d4dd") |
| !2 = !{} |
| !3 = !{i32 1, !"NumRegisterParameters", i32 0} |
| !4 = !{i32 2, !"CodeView", i32 1} |
| !5 = !{i32 2, !"Debug Info Version", i32 3} |
| !6 = !{i32 1, !"wchar_size", i32 2} |
| !7 = !{!"clang version 6.0.0 "} |
| !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) |
| !9 = !DISubroutineType(types: !10) |
| !10 = !{!11, !11} |
| !11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !12 = !{!13, !14, !16} |
| !13 = !DILocalVariable(name: "n", arg: 1, scope: !8, file: !1, line: 2, type: !11) |
| !14 = !DILocalVariable(name: "d", scope: !8, file: !1, line: 3, type: !15) |
| !15 = !DIBasicType(name: "double", size: 64, encoding: DW_ATE_float) |
| !16 = !DILocalVariable(name: "p", scope: !8, file: !1, line: 4, type: !17) |
| !17 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 32) |
| !18 = !DILocation(line: 2, column: 28, scope: !8) |
| !19 = !DILocation(line: 3, column: 3, scope: !8) |
| !20 = !DILocation(line: 3, column: 10, scope: !8) |
| !21 = !{!22, !22, i64 0} |
| !22 = !{!"double", !23, i64 0} |
| !23 = !{!"omnipotent char", !24, i64 0} |
| !24 = !{!"Simple C/C++ TBAA"} |
| !25 = !DILocation(line: 4, column: 13, scope: !8) |
| !26 = !DILocation(line: 4, column: 9, scope: !8) |
| !27 = !DILocation(line: 5, column: 3, scope: !8) |
| !28 = !DILocation(line: 7, column: 1, scope: !8) |
| !29 = !DILocation(line: 6, column: 3, scope: !8) |
