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Differential D108371 Diff 394825 llvm/test/Transforms/LoopVectorize/unsafe-dep-remark.ll

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llvm/test/Transforms/LoopVectorize/unsafe-dep-remark.ll

; RUN: opt -loop-vectorize -force-vector-width=2 -pass-remarks-analysis=loop-vectorize < %s 2>&1 | FileCheck %s ; RUN: opt -loop-vectorize -force-vector-width=2 -pass-remarks-analysis=loop-vectorize < %s 2>&1 | FileCheck %s
; ModuleID = '/tmp/kk.c' ; ModuleID = '/tmp/kk.c'
source_filename = "/tmp/kk.c" source_filename = "/tmp/kk.c"
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
; 1 void success (char *A, char *B, char *C, char *D, char *E, int N) { ; 1 void success (char *A, char *B, char *C, char *D, char *E, int N) {
; 2 for(int i = 0; i < N; i++) { ; 2 for(int i = 0; i < N; i++) {
; 3 A[i + 1] = A[i] + B[i]; ; 3 A[i + 1] = A[i] + B[i];
; 4 C[i] = D[i] * E[i]; ; 4 C[i] = D[i] * E[i];
; 5 } ; 5 }
; 6 } ; 6 }
; CHECK: remark: /tmp/kk.c:2:3: loop not vectorized: unsafe dependent memory operations in loop. Use #pragma loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop ; CHECK: remark: /tmp/kk.c:3:14: loop not vectorized: unsafe dependent memory operations in loop. Use #pragma loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop
define void @success(i8* nocapture %A, i8* nocapture readonly %B, i8* nocapture %C, i8* nocapture readonly %D, i8* nocapture readonly %E, i32 %N) !dbg !6 { define void @success(i8* nocapture %A, i8* nocapture readonly %B, i8* nocapture %C, i8* nocapture readonly %D, i8* nocapture readonly %E, i32 %N) !dbg !6 {
entry: entry:
%cmp28 = icmp sgt i32 %N, 0, !dbg !8 %cmp28 = icmp sgt i32 %N, 0, !dbg !8
br i1 %cmp28, label %for.body, label %for.cond.cleanup, !dbg !9 br i1 %cmp28, label %for.body, label %for.cond.cleanup, !dbg !9
for.body: ; preds = %entry, %for.body for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ] %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
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