238 lines
11 KiB
LLVM
238 lines
11 KiB
LLVM
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; RUN: opt -loop-simplify -loop-distribute -enable-loop-distribute -S < %s 2>&1 \
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; RUN: | FileCheck %s --check-prefix=ALWAYS --check-prefix=NO_REMARKS
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; RUN: opt -loop-simplify -loop-distribute -enable-loop-distribute -S \
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; RUN: -pass-remarks-missed=loop-distribute < %s 2>&1 \
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; RUN: | FileCheck %s --check-prefix=ALWAYS --check-prefix=MISSED_REMARKS
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; RUN: opt -loop-simplify -loop-distribute -enable-loop-distribute -S \
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; RUN: -pass-remarks-analysis=loop-distribute < %s 2>&1 \
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; RUN: | FileCheck %s --check-prefix=ALWAYS --check-prefix=ANALYSIS_REMARKS
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; RUN: opt -loop-simplify -loop-distribute -enable-loop-distribute -S \
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; RUN: -pass-remarks=loop-distribute < %s 2>&1 \
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; RUN: | FileCheck %s --check-prefix=ALWAYS --check-prefix=REMARKS
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; This is the input program:
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;
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; 1 void forced (char *A, char *B, char *C, int N) {
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; 2 #pragma clang loop distribute(enable)
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; 3 for(int i = 0; i < N; i++) {
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; 4 A[i] = B[i] * C[i];
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; 5 }
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; 6 }
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; 7
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; 8 void not_forced (char *A, char *B, char *C, int N) {
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; 9 for(int i = 0; i < N; i++) {
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; 10 A[i] = B[i] * C[i];
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; 11 }
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; 12 }
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; 13
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; 14 void success (char *A, char *B, char *C, char *D, char *E, int N) {
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; 15 for(int i = 0; i < N; i++) {
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; 16 A[i + 1] = A[i] + B[i];
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; 17 C[i] = D[i] * E[i];
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; 18 }
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; 19 }
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.11.0"
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; MISSED_REMARKS: remark: /tmp/t.c:3:3: loop not distributed: use -Rpass-analysis=loop-distribute for more info
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; ALWAYS: remark: /tmp/t.c:3:3: loop not distributed: memory operations are safe for vectorization
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; ALWAYS: warning: /tmp/t.c:3:3: loop not distributed: failed explicitly specified loop distribution
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define void @forced(i8* %A, i8* %B, i8* %C, i32 %N) !dbg !7 {
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entry:
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%cmp12 = icmp sgt i32 %N, 0, !dbg !9
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br i1 %cmp12, label %ph, label %for.cond.cleanup, !dbg !10
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ph:
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br label %for.body
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for.body:
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %ph ]
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%arrayidx = getelementptr inbounds i8, i8* %B, i64 %indvars.iv, !dbg !12
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%0 = load i8, i8* %arrayidx, align 1, !dbg !12, !tbaa !13
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%arrayidx2 = getelementptr inbounds i8, i8* %C, i64 %indvars.iv, !dbg !16
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%1 = load i8, i8* %arrayidx2, align 1, !dbg !16, !tbaa !13
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%mul = mul i8 %1, %0, !dbg !17
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%arrayidx6 = getelementptr inbounds i8, i8* %A, i64 %indvars.iv, !dbg !18
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store i8 %mul, i8* %arrayidx6, align 1, !dbg !19, !tbaa !13
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !10
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !10
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%exitcond = icmp eq i32 %lftr.wideiv, %N, !dbg !10
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br i1 %exitcond, label %for.cond.cleanup, label %for.body, !dbg !10, !llvm.loop !20
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for.cond.cleanup:
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ret void, !dbg !11
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}
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; NO_REMARKS-NOT: remark: /tmp/t.c:9:3: loop not distributed: memory operations are safe for vectorization
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; MISSED_REMARKS: remark: /tmp/t.c:9:3: loop not distributed: use -Rpass-analysis=loop-distribute for more info
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; ANALYSIS_REMARKS: remark: /tmp/t.c:9:3: loop not distributed: memory operations are safe for vectorization
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; ALWAYS-NOT: warning: /tmp/t.c:9:3: loop not distributed: failed explicitly specified loop distribution
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define void @not_forced(i8* %A, i8* %B, i8* %C, i32 %N) !dbg !22 {
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entry:
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%cmp12 = icmp sgt i32 %N, 0, !dbg !23
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br i1 %cmp12, label %ph, label %for.cond.cleanup, !dbg !24
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ph:
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br label %for.body
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for.body:
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %ph ]
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%arrayidx = getelementptr inbounds i8, i8* %B, i64 %indvars.iv, !dbg !26
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%0 = load i8, i8* %arrayidx, align 1, !dbg !26, !tbaa !13
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%arrayidx2 = getelementptr inbounds i8, i8* %C, i64 %indvars.iv, !dbg !27
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%1 = load i8, i8* %arrayidx2, align 1, !dbg !27, !tbaa !13
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%mul = mul i8 %1, %0, !dbg !28
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%arrayidx6 = getelementptr inbounds i8, i8* %A, i64 %indvars.iv, !dbg !29
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store i8 %mul, i8* %arrayidx6, align 1, !dbg !30, !tbaa !13
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !24
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !24
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%exitcond = icmp eq i32 %lftr.wideiv, %N, !dbg !24
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br i1 %exitcond, label %for.cond.cleanup, label %for.body, !dbg !24
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for.cond.cleanup:
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ret void, !dbg !25
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}
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; REMARKS: remark: /tmp/t.c:15:3: distributed loop
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define void @success(i8* %A, i8* %B, i8* %C, i8* %D, i8* %E, i32 %N) !dbg !31 {
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entry:
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%cmp28 = icmp sgt i32 %N, 0, !dbg !32
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br i1 %cmp28, label %ph, label %for.cond.cleanup, !dbg !33
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ph:
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br label %for.body
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for.body:
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %ph ]
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%arrayidx = getelementptr inbounds i8, i8* %A, i64 %indvars.iv, !dbg !35
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%0 = load i8, i8* %arrayidx, align 1, !dbg !35, !tbaa !13
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%arrayidx2 = getelementptr inbounds i8, i8* %B, i64 %indvars.iv, !dbg !36
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%1 = load i8, i8* %arrayidx2, align 1, !dbg !36, !tbaa !13
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%add = add i8 %1, %0, !dbg !37
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !33
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%arrayidx7 = getelementptr inbounds i8, i8* %A, i64 %indvars.iv.next, !dbg !38
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store i8 %add, i8* %arrayidx7, align 1, !dbg !39, !tbaa !13
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%arrayidx9 = getelementptr inbounds i8, i8* %D, i64 %indvars.iv, !dbg !40
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%2 = load i8, i8* %arrayidx9, align 1, !dbg !40, !tbaa !13
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%arrayidx12 = getelementptr inbounds i8, i8* %E, i64 %indvars.iv, !dbg !41
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%3 = load i8, i8* %arrayidx12, align 1, !dbg !41, !tbaa !13
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%mul = mul i8 %3, %2, !dbg !42
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%arrayidx16 = getelementptr inbounds i8, i8* %C, i64 %indvars.iv, !dbg !43
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store i8 %mul, i8* %arrayidx16, align 1, !dbg !44, !tbaa !13
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !33
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%exitcond = icmp eq i32 %lftr.wideiv, %N, !dbg !33
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br i1 %exitcond, label %for.cond.cleanup, label %for.body, !dbg !33
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for.cond.cleanup:
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ret void, !dbg !34
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}
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; MISSED_REMARKS: /tmp/t.c:27:5: loop not distributed: use -Rpass-analysis=loop-distribute for more info
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; ANALYSIS_REMARKS: /tmp/t.c:27:5: loop not distributed: may not insert runtime check with convergent operation
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; ALWAYS: warning: /tmp/t.c:27:5: loop not distributed: failed explicitly specified loop distribution
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define void @convergent(i8* %A, i8* %B, i8* %C, i8* %D, i8* %E, i32 %N) #1 !dbg !45 {
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entry:
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%cmp28 = icmp sgt i32 %N, 0, !dbg !46
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br i1 %cmp28, label %ph, label %for.cond.cleanup, !dbg !47
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ph:
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br label %for.body
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for.body:
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %ph ]
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%arrayidx = getelementptr inbounds i8, i8* %A, i64 %indvars.iv, !dbg !49
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%0 = load i8, i8* %arrayidx, align 1, !dbg !49, !tbaa !13
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%arrayidx2 = getelementptr inbounds i8, i8* %B, i64 %indvars.iv, !dbg !50
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%1 = load i8, i8* %arrayidx2, align 1, !dbg !50, !tbaa !13
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%add = add i8 %1, %0, !dbg !51
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !57
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%arrayidx7 = getelementptr inbounds i8, i8* %A, i64 %indvars.iv.next, !dbg !52
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store i8 %add, i8* %arrayidx7, align 1, !dbg !53, !tbaa !13
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%arrayidx9 = getelementptr inbounds i8, i8* %D, i64 %indvars.iv, !dbg !54
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%2 = load i8, i8* %arrayidx9, align 1, !dbg !54, !tbaa !13
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%arrayidx12 = getelementptr inbounds i8, i8* %E, i64 %indvars.iv, !dbg !55
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%3 = load i8, i8* %arrayidx12, align 1, !dbg !55, !tbaa !13
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%mul = mul i8 %3, %2, !dbg !56
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%arrayidx16 = getelementptr inbounds i8, i8* %C, i64 %indvars.iv, !dbg !57
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store i8 %mul, i8* %arrayidx16, align 1, !dbg !58, !tbaa !13
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call void @llvm.convergent()
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !57
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%exitcond = icmp eq i32 %lftr.wideiv, %N, !dbg !57
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br i1 %exitcond, label %for.cond.cleanup, label %for.body, !llvm.loop !20, !dbg !57
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for.cond.cleanup:
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ret void, !dbg !58
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}
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declare void @llvm.convergent() #0
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attributes #0 = { nounwind readnone convergent }
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attributes #1 = { nounwind convergent }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0 (trunk 267633) (llvm/trunk 267675)", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !2)
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!1 = !DIFile(filename: "/tmp/t.c", directory: "/tmp")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 2}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!7 = distinct !DISubprogram(name: "forced", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !2)
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!8 = !DISubroutineType(types: !2)
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!9 = !DILocation(line: 3, column: 20, scope: !7)
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!10 = !DILocation(line: 3, column: 3, scope: !7)
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!11 = !DILocation(line: 6, column: 1, scope: !7)
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!12 = !DILocation(line: 4, column: 12, scope: !7)
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!13 = !{!14, !14, i64 0}
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!14 = !{!"omnipotent char", !15, i64 0}
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!15 = !{!"Simple C/C++ TBAA"}
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!16 = !DILocation(line: 4, column: 19, scope: !7)
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!17 = !DILocation(line: 4, column: 17, scope: !7)
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!18 = !DILocation(line: 4, column: 5, scope: !7)
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!19 = !DILocation(line: 4, column: 10, scope: !7)
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!20 = distinct !{!20, !21}
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!21 = !{!"llvm.loop.distribute.enable", i1 true}
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!22 = distinct !DISubprogram(name: "not_forced", scope: !1, file: !1, line: 8, type: !8, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !2)
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!23 = !DILocation(line: 9, column: 20, scope: !22)
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!24 = !DILocation(line: 9, column: 3, scope: !22)
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!25 = !DILocation(line: 12, column: 1, scope: !22)
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!26 = !DILocation(line: 10, column: 12, scope: !22)
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!27 = !DILocation(line: 10, column: 19, scope: !22)
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!28 = !DILocation(line: 10, column: 17, scope: !22)
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!29 = !DILocation(line: 10, column: 5, scope: !22)
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!30 = !DILocation(line: 10, column: 10, scope: !22)
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!31 = distinct !DISubprogram(name: "success", scope: !1, file: !1, line: 14, type: !8, isLocal: false, isDefinition: true, scopeLine: 14, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !2)
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!32 = !DILocation(line: 15, column: 20, scope: !31)
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!33 = !DILocation(line: 15, column: 3, scope: !31)
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!34 = !DILocation(line: 19, column: 1, scope: !31)
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!35 = !DILocation(line: 16, column: 16, scope: !31)
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!36 = !DILocation(line: 16, column: 23, scope: !31)
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!37 = !DILocation(line: 16, column: 21, scope: !31)
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!38 = !DILocation(line: 16, column: 5, scope: !31)
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!39 = !DILocation(line: 16, column: 14, scope: !31)
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!40 = !DILocation(line: 17, column: 12, scope: !31)
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!41 = !DILocation(line: 17, column: 19, scope: !31)
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!42 = !DILocation(line: 17, column: 17, scope: !31)
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!43 = !DILocation(line: 17, column: 5, scope: !31)
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!44 = !DILocation(line: 17, column: 10, scope: !31)
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!45 = distinct !DISubprogram(name: "convergent", scope: !1, file: !1, line: 24, type: !8, isLocal: false, isDefinition: true, scopeLine: 24, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !2)
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!46 = !DILocation(line: 25, column: 20, scope: !45)
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!47 = !DILocation(line: 25, column: 3, scope: !45)
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!48 = !DILocation(line: 29, column: 1, scope: !45)
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!49 = !DILocation(line: 26, column: 16, scope: !45)
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!50 = !DILocation(line: 26, column: 23, scope: !45)
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!51 = !DILocation(line: 26, column: 21, scope: !45)
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!52 = !DILocation(line: 26, column: 5, scope: !45)
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!53 = !DILocation(line: 26, column: 14, scope: !45)
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!54 = !DILocation(line: 27, column: 12, scope: !45)
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!55 = !DILocation(line: 27, column: 19, scope: !45)
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!56 = !DILocation(line: 27, column: 17, scope: !45)
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!57 = !DILocation(line: 27, column: 5, scope: !45)
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!58 = !DILocation(line: 27, column: 10, scope: !45)
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