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.
36 lines
1.5 KiB
C++
36 lines
1.5 KiB
C++
// RUN: %clang_cc1 -triple aarch64_be-apple-darwin -emit-llvm -o - -O1 %s | \
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// RUN: FileCheck -check-prefixes=CHECK %s
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// RUN: %clang_cc1 -triple aarch64-apple-darwin -emit-llvm -o - -O1 %s | \
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// RUN: FileCheck -check-prefixes=CHECK %s
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//
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// Check that TBAA metadata for structs containing bitfields is
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// consistent between big and little endian layouts.
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struct NamedBitfields {
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int f1 : 8;
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int f2 : 8;
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unsigned f3 : 1;
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unsigned f4 : 15;
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int f5;
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double f6;
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};
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// CHECK-LABEL: _Z4copyP14NamedBitfieldsS0_
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// CHECK-SAME: ptr noundef writeonly captures(none) initializes((0, 16)) [[A1:%.*]], ptr noundef readonly captures(none) [[A2:%.*]]) local_unnamed_addr #[[ATTR0:[0-9]+]] {
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// CHECK-NEXT: entry:
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// CHECK-NEXT: tail call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) [[A1]], ptr noundef nonnull align 8 dereferenceable(16) [[A2]], i64 16, i1 false), !tbaa.struct [[TBAA_STRUCT2:![0-9]+]]
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// CHECK-NEXT: ret void
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//
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void copy(NamedBitfields *a1, NamedBitfields *a2) {
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*a1 = *a2;
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}
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// CHECK: [[TBAA_STRUCT2]] = !{i64 0, i64 4, [[META3:![0-9]+]], i64 4, i64 4, [[META6:![0-9]+]], i64 8, i64 8, [[META8:![0-9]+]]}
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// CHECK: [[META3]] = !{[[META4:![0-9]+]], [[META4]], i64 0}
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// CHECK: [[META4]] = !{!"omnipotent char", [[META5:![0-9]+]], i64 0}
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// CHECK: [[META5]] = !{!"Simple C++ TBAA"}
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// CHECK: [[META6]] = !{[[META7:![0-9]+]], [[META7]], i64 0}
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// CHECK: [[META7]] = !{!"int", [[META4]], i64 0}
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// CHECK: [[META8]] = !{[[META9:![0-9]+]], [[META9]], i64 0}
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// CHECK: [[META9]] = !{!"double", [[META4]], i64 0}
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