80 lines
2.9 KiB
LLVM
80 lines
2.9 KiB
LLVM
|
; This test checks if debug loc is propagated to load/store created by GVN/Instcombine.
|
||
|
|
; RUN: opt < %s -gvn -S | FileCheck %s --check-prefixes=ALL,GVN
|
||
|
|
; RUN: opt < %s -gvn -instcombine -S | FileCheck %s --check-prefixes=ALL,INSTCOMBINE
|
||
|
|
|
||
|
|
; struct node {
|
||
|
|
; int *v;
|
||
|
|
; struct desc *descs;
|
||
|
|
; };
|
||
|
|
|
||
|
|
; struct desc {
|
||
|
|
; struct node *node;
|
||
|
|
; };
|
||
|
|
|
||
|
|
; extern int bar(void *v, void* n);
|
||
|
|
|
||
|
|
; int test(struct desc *desc)
|
||
|
|
; {
|
||
|
|
; void *v, *n;
|
||
|
|
; v = !desc ? ((void *)0) : desc->node->v; // Line 15
|
||
|
|
; n = &desc->node->descs[0]; // Line 16
|
||
|
|
; return bar(v, n);
|
||
|
|
; }
|
||
|
|
|
||
|
|
; Line 16, Column 13:
|
||
|
|
; n = &desc->node->descs[0];
|
||
|
|
; ^
|
||
|
|
|
||
|
|
target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
|
||
|
|
target triple = "aarch64--linux-gnu"
|
||
|
|
|
||
|
|
%struct.desc = type { %struct.node* }
|
||
|
|
%struct.node = type { i32*, %struct.desc* }
|
||
|
|
|
||
|
|
define i32 @test(%struct.desc* readonly %desc) local_unnamed_addr #0 !dbg !4 {
|
||
|
|
entry:
|
||
|
|
%tobool = icmp eq %struct.desc* %desc, null
|
||
|
|
br i1 %tobool, label %cond.end, label %cond.false, !dbg !9
|
||
|
|
; ALL: br i1 %tobool, label %entry.cond.end_crit_edge, label %cond.false, !dbg [[LOC_15_6:![0-9]+]]
|
||
|
|
; ALL: entry.cond.end_crit_edge:
|
||
|
|
; GVN: %.pre = load %struct.node*, %struct.node** null, align 8, !dbg [[LOC_16_13:![0-9]+]]
|
||
|
|
; INSTCOMBINE:store %struct.node* undef, %struct.node** null, align 536870912, !dbg [[LOC_16_13:![0-9]+]]
|
||
|
|
|
||
|
|
cond.false:
|
||
|
|
%0 = bitcast %struct.desc* %desc to i8***, !dbg !11
|
||
|
|
%1 = load i8**, i8*** %0, align 8, !dbg !11
|
||
|
|
%2 = load i8*, i8** %1, align 8
|
||
|
|
br label %cond.end, !dbg !9
|
||
|
|
|
||
|
|
cond.end:
|
||
|
|
%3 = phi i8* [ %2, %cond.false ], [ null, %entry ], !dbg !9
|
||
|
|
%node2 = getelementptr inbounds %struct.desc, %struct.desc* %desc, i64 0, i32 0
|
||
|
|
%4 = load %struct.node*, %struct.node** %node2, align 8, !dbg !10
|
||
|
|
%descs = getelementptr inbounds %struct.node, %struct.node* %4, i64 0, i32 1
|
||
|
|
%5 = bitcast %struct.desc** %descs to i8**
|
||
|
|
%6 = load i8*, i8** %5, align 8
|
||
|
|
%call = tail call i32 @bar(i8* %3, i8* %6)
|
||
|
|
ret i32 %call
|
||
|
|
}
|
||
|
|
|
||
|
|
declare i32 @bar(i8*, i8*) local_unnamed_addr #1
|
||
|
|
!llvm.dbg.cu = !{!0}
|
||
|
|
!llvm.module.flags = !{!2, !3}
|
||
|
|
|
||
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, emissionKind: FullDebug)
|
||
|
|
!1 = !DIFile(filename: "test.c", directory: ".")
|
||
|
|
!2 = !{i32 2, !"Dwarf Version", i32 4}
|
||
|
|
!3 = !{i32 2, !"Debug Info Version", i32 3}
|
||
|
|
!4 = distinct !DISubprogram(name: "test", scope: !1, file: !1, line: 12, type: !5, isLocal: false, isDefinition: true, scopeLine: 13, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !8)
|
||
|
|
!5 = !DISubroutineType(types: !6)
|
||
|
|
!6 = !{!7}
|
||
|
|
!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
|
||
|
|
!8 = !{}
|
||
|
|
!9 = !DILocation(line: 15, column: 6, scope: !4)
|
||
|
|
!10 = !DILocation(line: 16, column: 13, scope: !4)
|
||
|
|
!11 = !DILocation(line: 15, column: 34, scope: !4)
|
||
|
|
|
||
|
|
;ALL: [[SCOPE:![0-9]+]] = distinct !DISubprogram(name: "test",{{.*}}
|
||
|
|
;ALL: [[LOC_15_6]] = !DILocation(line: 15, column: 6, scope: [[SCOPE]])
|
||
|
|
;ALL: [[LOC_16_13]] = !DILocation(line: 16, column: 13, scope: [[SCOPE]])
|