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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.
102 lines
3.2 KiB
C++
102 lines
3.2 KiB
C++
// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 2
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -O2 -emit-llvm -o - %s | FileCheck %s
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struct Tail {
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~Tail();
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int a : 16;
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int b : 8;
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};
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struct Char {
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int a : 16;
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int b : 8;
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char c;
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};
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struct Int {
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int a : 16;
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int b : 8;
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int c;
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};
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// CHECK-LABEL: define dso_local void @_Z1AP4Tail
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// CHECK-SAME: (ptr noundef captures(none) [[P:%.*]]) local_unnamed_addr #[[ATTR0:[0-9]+]] {
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// CHECK-NEXT: entry:
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// CHECK-NEXT: [[BF_LOAD:%.*]] = load i16, ptr [[P]], align 4
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// CHECK-NEXT: [[INC:%.*]] = add i16 [[BF_LOAD]], 1
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// CHECK-NEXT: store i16 [[INC]], ptr [[P]], align 4
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// CHECK-NEXT: ret void
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//
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void A (Tail *p) {
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p->a++;
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}
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// CHECK-LABEL: define dso_local void @_Z1BP4Tail
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// CHECK-SAME: (ptr noundef captures(none) [[P:%.*]]) local_unnamed_addr #[[ATTR0]] {
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// CHECK-NEXT: entry:
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// CHECK-NEXT: [[B:%.*]] = getelementptr inbounds nuw i8, ptr [[P]], i64 2
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// CHECK-NEXT: [[BF_LOAD:%.*]] = load i8, ptr [[B]], align 2
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// CHECK-NEXT: [[INC:%.*]] = add i8 [[BF_LOAD]], 1
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// CHECK-NEXT: store i8 [[INC]], ptr [[B]], align 2
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// CHECK-NEXT: ret void
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//
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void B (Tail *p) {
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p->b++;
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}
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// CHECK-LABEL: define dso_local void @_Z1AP4Char
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// CHECK-SAME: (ptr noundef captures(none) [[P:%.*]]) local_unnamed_addr #[[ATTR0]] {
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// CHECK-NEXT: entry:
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// CHECK-NEXT: [[BF_LOAD:%.*]] = load i16, ptr [[P]], align 4
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// CHECK-NEXT: [[INC:%.*]] = add i16 [[BF_LOAD]], 1
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// CHECK-NEXT: store i16 [[INC]], ptr [[P]], align 4
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// CHECK-NEXT: ret void
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//
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void A (Char *p) {
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p->a++;
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}
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// CHECK-LABEL: define dso_local void @_Z1BP4Char
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// CHECK-SAME: (ptr noundef captures(none) [[P:%.*]]) local_unnamed_addr #[[ATTR0]] {
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// CHECK-NEXT: entry:
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// CHECK-NEXT: [[B:%.*]] = getelementptr inbounds nuw i8, ptr [[P]], i64 2
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// CHECK-NEXT: [[BF_LOAD:%.*]] = load i8, ptr [[B]], align 2
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// CHECK-NEXT: [[INC:%.*]] = add i8 [[BF_LOAD]], 1
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// CHECK-NEXT: store i8 [[INC]], ptr [[B]], align 2
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// CHECK-NEXT: ret void
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//
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void B (Char *p) {
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p->b++;
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}
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// CHECK-LABEL: define dso_local void @_Z1AP3Int
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// CHECK-SAME: (ptr noundef captures(none) [[P:%.*]]) local_unnamed_addr #[[ATTR0]] {
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// CHECK-NEXT: entry:
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// CHECK-NEXT: [[BF_LOAD:%.*]] = load i32, ptr [[P]], align 4
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// CHECK-NEXT: [[INC:%.*]] = add i32 [[BF_LOAD]], 1
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// CHECK-NEXT: [[BF_VALUE:%.*]] = and i32 [[INC]], 65535
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// CHECK-NEXT: [[BF_CLEAR:%.*]] = and i32 [[BF_LOAD]], -65536
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// CHECK-NEXT: [[BF_SET:%.*]] = or disjoint i32 [[BF_VALUE]], [[BF_CLEAR]]
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// CHECK-NEXT: store i32 [[BF_SET]], ptr [[P]], align 4
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// CHECK-NEXT: ret void
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//
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void A (Int *p) {
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p->a++;
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}
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// CHECK-LABEL: define dso_local void @_Z1BP3Int
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// CHECK-SAME: (ptr noundef captures(none) [[P:%.*]]) local_unnamed_addr #[[ATTR0]] {
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// CHECK-NEXT: entry:
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// CHECK-NEXT: [[BF_LOAD:%.*]] = load i32, ptr [[P]], align 4
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// CHECK-NEXT: [[BF_VALUE:%.*]] = add i32 [[BF_LOAD]], 65536
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// CHECK-NEXT: [[BF_SHL2:%.*]] = and i32 [[BF_VALUE]], 16711680
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// CHECK-NEXT: [[BF_CLEAR:%.*]] = and i32 [[BF_LOAD]], -16711681
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// CHECK-NEXT: [[BF_SET:%.*]] = or disjoint i32 [[BF_SHL2]], [[BF_CLEAR]]
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// CHECK-NEXT: store i32 [[BF_SET]], ptr [[P]], align 4
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// CHECK-NEXT: ret void
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//
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void B (Int *p) {
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p->b++;
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}
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