111 lines
5.1 KiB
LLVM
111 lines
5.1 KiB
LLVM
|
; FIXME: use -stop-after when MIR serialization output includes needed debug info.
|
||
|
|
; RUN: llc < %s -print-after=wasm-optimize-live-intervals 2>&1 | FileCheck %s
|
||
|
|
|
||
|
|
; CHECK: {{.*}}After WebAssembly Optimize Live Intervals
|
||
|
|
; CHECK: bb.3.for.body.for.body_crit_edge:
|
||
|
|
; CHECK: [[REG:%[0-9]+]]:i32 = nsw ADD_I32 {{.*}} fib.c:7:7
|
||
|
|
; CHECK: DBG_VALUE [[REG]]:i32, $noreg, !"a", {{.*}} fib.c:5:13
|
||
|
|
|
||
|
|
; ModuleID = 'fib.bc'
|
||
|
|
source_filename = "fib.c"
|
||
|
|
; void swap(int* a, int* b);
|
||
|
|
;
|
||
|
|
; __attribute__ ((visibility ("default")))
|
||
|
|
; int fib(int n) {
|
||
|
|
; int i, t, a = 0, b = 1;
|
||
|
|
; for (i = 0; i < n; i++) {
|
||
|
|
; a += b;
|
||
|
|
; swap(&a, &b);
|
||
|
|
; }
|
||
|
|
; return b;
|
||
|
|
; }
|
||
|
|
target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
|
||
|
|
target triple = "wasm32-unknown-unknown-wasm"
|
||
|
|
|
||
|
|
; Function Attrs: nounwind
|
||
|
|
define i32 @fib(i32 %n) local_unnamed_addr #0 !dbg !7 {
|
||
|
|
entry:
|
||
|
|
%a = alloca i32, align 4
|
||
|
|
%b = alloca i32, align 4
|
||
|
|
%0 = bitcast i32* %a to i8*, !dbg !18
|
||
|
|
call void @llvm.dbg.value(metadata i32 0, metadata !15, metadata !DIExpression()), !dbg !19
|
||
|
|
store i32 0, i32* %a, align 4, !dbg !19, !tbaa !20
|
||
|
|
%1 = bitcast i32* %b to i8*, !dbg !18
|
||
|
|
store i32 1, i32* %b, align 4, !dbg !24, !tbaa !20
|
||
|
|
%cmp4 = icmp sgt i32 %n, 0, !dbg !26
|
||
|
|
br i1 %cmp4, label %for.body.preheader, label %for.end, !dbg !29
|
||
|
|
|
||
|
|
for.body.preheader: ; preds = %entry
|
||
|
|
call void @llvm.dbg.value(metadata i32 0, metadata !15, metadata !DIExpression()), !dbg !19
|
||
|
|
store i32 1, i32* %a, align 4, !dbg !30, !tbaa !20
|
||
|
|
call void @llvm.dbg.value(metadata i32* %a, metadata !15, metadata !DIExpression()), !dbg !19
|
||
|
|
call void @swap(i32* nonnull %a, i32* nonnull %b) #5, !dbg !32
|
||
|
|
%2 = load i32, i32* %b, align 4, !dbg !33, !tbaa !20
|
||
|
|
%exitcond9 = icmp eq i32 %n, 1, !dbg !26
|
||
|
|
br i1 %exitcond9, label %for.end, label %for.body.for.body_crit_edge, !dbg !29, !llvm.loop !34
|
||
|
|
|
||
|
|
for.body.for.body_crit_edge: ; preds = %for.body.preheader, %for.body.for.body_crit_edge
|
||
|
|
%3 = phi i32 [ %4, %for.body.for.body_crit_edge ], [ %2, %for.body.preheader ]
|
||
|
|
%inc10 = phi i32 [ %inc, %for.body.for.body_crit_edge ], [ 1, %for.body.preheader ]
|
||
|
|
%.pre = load i32, i32* %a, align 4, !dbg !30, !tbaa !20
|
||
|
|
call void @llvm.dbg.value(metadata i32 %.pre, metadata !15, metadata !DIExpression()), !dbg !19
|
||
|
|
%add = add nsw i32 %.pre, %3, !dbg !30
|
||
|
|
call void @llvm.dbg.value(metadata i32 %add, metadata !15, metadata !DIExpression()), !dbg !19
|
||
|
|
store i32 %add, i32* %a, align 4, !dbg !30, !tbaa !20
|
||
|
|
call void @llvm.dbg.value(metadata i32* %a, metadata !15, metadata !DIExpression()), !dbg !19
|
||
|
|
call void @swap(i32* nonnull %a, i32* nonnull %b) #5, !dbg !32
|
||
|
|
%inc = add nuw nsw i32 %inc10, 1, !dbg !36
|
||
|
|
%4 = load i32, i32* %b, align 4, !dbg !33, !tbaa !20
|
||
|
|
%exitcond = icmp eq i32 %inc, %n, !dbg !26
|
||
|
|
br i1 %exitcond, label %for.end, label %for.body.for.body_crit_edge, !dbg !29, !llvm.loop !34
|
||
|
|
|
||
|
|
for.end: ; preds = %for.body.for.body_crit_edge, %for.body.preheader, %entry
|
||
|
|
%.lcssa = phi i32 [ 1, %entry ], [ %2, %for.body.preheader ], [ %4, %for.body.for.body_crit_edge ]
|
||
|
|
ret i32 %.lcssa, !dbg !38
|
||
|
|
}
|
||
|
|
|
||
|
|
declare void @swap(i32*, i32*) local_unnamed_addr #2
|
||
|
|
|
||
|
|
; Function Attrs: nounwind readnone speculatable
|
||
|
|
declare void @llvm.dbg.value(metadata, metadata, metadata) #4
|
||
|
|
|
||
|
|
!llvm.dbg.cu = !{!0}
|
||
|
|
!llvm.module.flags = !{!3, !4, !5}
|
||
|
|
!llvm.ident = !{!6}
|
||
|
|
|
||
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 7.0.0 (trunk 334610)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
|
||
|
|
!1 = !DIFile(filename: "fib.c", directory: "/d/y/llvmwasm")
|
||
|
|
!2 = !{}
|
||
|
|
!3 = !{i32 2, !"Dwarf Version", i32 4}
|
||
|
|
!4 = !{i32 2, !"Debug Info Version", i32 3}
|
||
|
|
!5 = !{i32 1, !"wchar_size", i32 4}
|
||
|
|
!6 = !{!"clang version 7.0.0 (trunk 334610)"}
|
||
|
|
!7 = distinct !DISubprogram(name: "fib", scope: !1, file: !1, line: 4, type: !8, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !11)
|
||
|
|
!8 = !DISubroutineType(types: !9)
|
||
|
|
!9 = !{!10, !10}
|
||
|
|
!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
|
||
|
|
!11 = !{!15}
|
||
|
|
!15 = !DILocalVariable(name: "a", scope: !7, file: !1, line: 5, type: !10)
|
||
|
|
!17 = !DILocation(line: 4, column: 13, scope: !7)
|
||
|
|
!18 = !DILocation(line: 5, column: 3, scope: !7)
|
||
|
|
!19 = !DILocation(line: 5, column: 13, scope: !7)
|
||
|
|
!20 = !{!21, !21, i64 0}
|
||
|
|
!21 = !{!"int", !22, i64 0}
|
||
|
|
!22 = !{!"omnipotent char", !23, i64 0}
|
||
|
|
!23 = !{!"Simple C/C++ TBAA"}
|
||
|
|
!24 = !DILocation(line: 5, column: 20, scope: !7)
|
||
|
|
!25 = !DILocation(line: 5, column: 7, scope: !7)
|
||
|
|
!26 = !DILocation(line: 6, column: 17, scope: !27)
|
||
|
|
!27 = distinct !DILexicalBlock(scope: !28, file: !1, line: 6, column: 3)
|
||
|
|
!28 = distinct !DILexicalBlock(scope: !7, file: !1, line: 6, column: 3)
|
||
|
|
!29 = !DILocation(line: 6, column: 3, scope: !28)
|
||
|
|
!30 = !DILocation(line: 7, column: 7, scope: !31)
|
||
|
|
!31 = distinct !DILexicalBlock(scope: !27, file: !1, line: 6, column: 27)
|
||
|
|
!32 = !DILocation(line: 8, column: 5, scope: !31)
|
||
|
|
!33 = !DILocation(line: 0, scope: !7)
|
||
|
|
!34 = distinct !{!34, !29, !35}
|
||
|
|
!35 = !DILocation(line: 9, column: 3, scope: !28)
|
||
|
|
!36 = !DILocation(line: 6, column: 23, scope: !27)
|
||
|
|
!37 = !DILocation(line: 11, column: 1, scope: !7)
|
||
|
|
!38 = !DILocation(line: 10, column: 3, scope: !7)
|