2019-04-17 12:52:47 +08:00
; RUN: opt < %s -loop-vectorize -force-vector-width=4 -S -pass-remarks-missed='loop-vectorize' 2>&1 | FileCheck %s
; C/C++ code for control flow test
; int test(int *A, int Length) {
; for (int i = 0; i < Length; i++) {
; if (A[i] > 10.0) goto end;
; A[i] = 0;
; }
; end:
; return 0;
; }
2020-12-29 02:11:06 +08:00
; CHECK: remark: source.cpp:5:9: loop not vectorized: could not determine number of loop iterations
2019-04-17 12:52:47 +08:00
; CHECK: remark: source.cpp:5:9: loop not vectorized
; CHECK: _Z4testPii
; CHECK-NOT: x i32>
; CHECK: ret
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
; Function Attrs: nounwind optsize ssp uwtable
define i32 @_Z4testPii ( i32 * nocapture %A , i32 %Length ) #0 !dbg !4 {
entry:
%cmp8 = icmp sgt i32 %Length , 0 , !dbg !10
br i1 %cmp8 , label %for.body.preheader , label %end , !dbg !10
for.body.preheader: ; preds = %entry
br label %for.body , !dbg !12
for.body: ; preds = %for.body.preheader, %if.else
%indvars.iv = phi i64 [ %indvars.iv.next , %if.else ] , [ 0 , %for.body.preheader ]
%arrayidx = getelementptr inbounds i32 , i32 * %A , i64 %indvars.iv , !dbg !12
%0 = load i32 , i32 * %arrayidx , align 4 , !dbg !12 , !tbaa !15
%cmp1 = icmp sgt i32 %0 , 10 , !dbg !12
br i1 %cmp1 , label %end.loopexit , label %if.else , !dbg !12
if.else: ; preds = %for.body
store i32 0 , i32 * %arrayidx , align 4 , !dbg !19 , !tbaa !15
%indvars.iv.next = add nuw nsw i64 %indvars.iv , 1 , !dbg !10
%1 = trunc i64 %indvars.iv.next to i32 , !dbg !10
%cmp = icmp slt i32 %1 , %Length , !dbg !10
br i1 %cmp , label %for.body , label %end.loopexit , !dbg !10
end.loopexit: ; preds = %if.else, %for.body
br label %end
end: ; preds = %end.loopexit, %entry
ret i32 0 , !dbg !20
}
attributes #0 = { nounwind }
!llvm.dbg.cu = ! { !0 }
!llvm.module.flags = ! { !7 , !8 }
!llvm.ident = ! { !9 }
!0 = distinct !DICompileUnit ( language: D W _ L A N G _ C _ p l u s _ p l u s , producer: "clang version 3.5.0" , isOptimized: true , runtimeVersion: 6 , emissionKind: L i n e T a b l e s O n l y , file: !1 , enums: !2 , retainedTypes: !2 , globals: !2 , imports: !2 )
!1 = !DIFile ( filename: "source.cpp" , directory: "." )
!2 = ! { }
!4 = distinct !DISubprogram ( name: "test" , line: 1 , isLocal: false , isDefinition: true , virtualIndex: 6 , flags: D I F l a g P r o t o t y p e d , isOptimized: true , unit: !0 , scopeLine: 2 , file: !1 , scope: !5 , type: !6 , retainedNodes: !2 )
!5 = !DIFile ( filename: "source.cpp" , directory: "." )
!6 = !DISubroutineType ( types: !2 )
!7 = ! { i32 2 , !"Dwarf Version" , i32 2 }
!8 = ! { i32 2 , !"Debug Info Version" , i32 3 }
!9 = ! { !"clang version 3.5.0" }
!10 = !DILocation ( line: 3 , column: 8 , scope: !11 )
!11 = distinct !DILexicalBlock ( line: 3 , column: 3 , file: !1 , scope: !4 )
!12 = !DILocation ( line: 5 , column: 9 , scope: !13 )
!13 = distinct !DILexicalBlock ( line: 5 , column: 9 , file: !1 , scope: !14 )
!14 = distinct !DILexicalBlock ( line: 4 , column: 3 , file: !1 , scope: !11 )
!15 = ! { !16 , !16 , i64 0 }
!16 = ! { !"int" , !17 , i64 0 }
!17 = ! { !"omnipotent char" , !18 , i64 0 }
!18 = ! { !"Simple C/C++ TBAA" }
!19 = !DILocation ( line: 8 , column: 7 , scope: !13 )
!20 = !DILocation ( line: 12 , column: 3 , scope: !4 )