29441e4f5f
This PR removes the old `nocapture` attribute, replacing it with the new `captures` attribute introduced in #116990. This change is intended to be essentially NFC, replacing existing uses of `nocapture` with `captures(none)` without adding any new analysis capabilities. Making use of non-`none` values is left for a followup. Some notes: * `nocapture` will be upgraded to `captures(none)` by the bitcode reader. * `nocapture` will also be upgraded by the textual IR reader. This is to make it easier to use old IR files and somewhat reduce the test churn in this PR. * Helper APIs like `doesNotCapture()` will check for `captures(none)`. * MLIR import will convert `captures(none)` into an `llvm.nocapture` attribute. The representation in the LLVM IR dialect should be updated separately.
79 lines
3.4 KiB
LLVM
79 lines
3.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
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; RUN: opt -S -O3 -mtriple=x86_64-unknown-linux-gnu < %s | FileCheck %s
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define internal void @acc(ptr noalias noundef %val, ptr noalias noundef %prev) {
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entry:
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%0 = load i8, ptr %prev, align 1
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%conv = zext i8 %0 to i32
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%1 = load i8, ptr %val, align 1
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%conv1 = zext i8 %1 to i32
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%add = add nsw i32 %conv1, %conv
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%conv2 = trunc i32 %add to i8
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store i8 %conv2, ptr %val, align 1
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ret void
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}
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; This loop should not get vectorized.
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define void @accsum(ptr noundef %vals, i64 noundef %num) #0 {
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; CHECK-LABEL: define void @accsum(
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; CHECK-SAME: ptr noundef captures(none) [[VALS:%.*]], i64 noundef [[NUM:%.*]]) local_unnamed_addr #[[ATTR0:[0-9]+]] {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP1:%.*]] = icmp ugt i64 [[NUM]], 1
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; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]]
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; CHECK: for.body.preheader:
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; CHECK-NEXT: [[LOAD_INITIAL:%.*]] = load i8, ptr [[VALS]], align 1
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; CHECK-NEXT: br label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[STORE_FORWARDED:%.*]] = phi i8 [ [[LOAD_INITIAL]], [[FOR_BODY_PREHEADER]] ], [ [[ADD_I:%.*]], [[FOR_BODY]] ]
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; CHECK-NEXT: [[I_02:%.*]] = phi i64 [ 1, [[FOR_BODY_PREHEADER]] ], [ [[INC:%.*]], [[FOR_BODY]] ]
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; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i8, ptr [[VALS]], i64 [[I_02]]
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; CHECK-NEXT: [[TMP0:%.*]] = load i8, ptr [[ARRAYIDX]], align 1, !alias.scope [[META0:![0-9]+]], !noalias [[META3:![0-9]+]]
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; CHECK-NEXT: [[ADD_I]] = add i8 [[TMP0]], [[STORE_FORWARDED]]
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; CHECK-NEXT: store i8 [[ADD_I]], ptr [[ARRAYIDX]], align 1, !alias.scope [[META0]], !noalias [[META3]]
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; CHECK-NEXT: [[INC]] = add nuw i64 [[I_02]], 1
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; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], [[NUM]]
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; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[FOR_END]], label [[FOR_BODY]]
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; CHECK: for.end:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %for.cond
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for.cond: ; preds = %for.inc, %entry
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%i.0 = phi i64 [ 1, %entry ], [ %inc, %for.inc ]
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%cmp = icmp ult i64 %i.0, %num
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br i1 %cmp, label %for.body, label %for.cond.cleanup
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for.cond.cleanup: ; preds = %for.cond
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br label %for.end
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for.body: ; preds = %for.cond
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%arrayidx = getelementptr inbounds i8, ptr %vals, i64 %i.0
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%sub = sub i64 %i.0, 1
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%arrayidx1 = getelementptr inbounds i8, ptr %vals, i64 %sub
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call void @acc(ptr noundef %arrayidx, ptr noundef %arrayidx1)
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br label %for.inc
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for.inc: ; preds = %for.body
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%inc = add i64 %i.0, 1
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br label %for.cond
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for.end: ; preds = %for.cond.cleanup
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ret void
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}
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; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
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declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1
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; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
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declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1
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attributes #0 = { "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87"}
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;.
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; CHECK: [[META0]] = !{[[META1:![0-9]+]]}
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; CHECK: [[META1]] = distinct !{[[META1]], [[META2:![0-9]+]], !"acc: %val"}
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; CHECK: [[META2]] = distinct !{[[META2]], !"acc"}
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; CHECK: [[META3]] = !{[[META4:![0-9]+]]}
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; CHECK: [[META4]] = distinct !{[[META4]], [[META2]], !"acc: %prev"}
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;.
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