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.
51 lines
1.3 KiB
LLVM
51 lines
1.3 KiB
LLVM
; RUN: opt -S -passes=inferattrs,function-attrs < %s | FileCheck %s
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declare void @f_readonly() readonly
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declare void @f_readnone() readnone
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declare void @f_writeonly() writeonly
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define void @test_0(ptr %x) {
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; FunctionAttrs must not infer readonly / readnone for %x
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; CHECK-LABEL: define void @test_0(ptr %x) #3 {
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entry:
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; CHECK: call void @f_readonly() [ "foo"(ptr %x) ]
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call void @f_readonly() [ "foo"(ptr %x) ]
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ret void
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}
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define void @test_1(ptr %x) {
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; FunctionAttrs must not infer readonly / readnone for %x
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; CHECK-LABEL: define void @test_1(ptr %x) #4 {
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entry:
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; CHECK: call void @f_readnone() [ "foo"(ptr %x) ]
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call void @f_readnone() [ "foo"(ptr %x) ]
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ret void
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}
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define void @test_2(ptr %x) {
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; FunctionAttrs must not infer writeonly
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; CHECK-LABEL: define void @test_2(ptr %x) {
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entry:
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; CHECK: call void @f_writeonly() [ "foo"(ptr %x) ]
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call void @f_writeonly() [ "foo"(ptr %x) ]
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ret void
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}
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define void @test_3(ptr %x) {
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; The "deopt" operand bundle does not capture or write to %x.
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; CHECK-LABEL: define void @test_3(ptr readonly captures(none) %x)
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entry:
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call void @f_readonly() [ "deopt"(ptr %x) ]
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ret void
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}
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; CHECK: attributes #0 = { nofree memory(read) }
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; CHECK: attributes #1 = { nofree nosync memory(none) }
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; CHECK: attributes #2 = { memory(write) }
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; CHECK: attributes #3 = { nofree }
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; CHECK: attributes #4 = { nofree nosync }
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