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.
132 lines
4.0 KiB
LLVM
132 lines
4.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --check-attributes
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; RUN: opt -passes=function-attrs -S < %s | FileCheck %s
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define i32 @nonleaf() convergent {
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; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
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; CHECK-LABEL: define {{[^@]+}}@nonleaf
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; CHECK-SAME: () #[[ATTR0:[0-9]+]] {
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; CHECK-NEXT: [[A:%.*]] = call i32 @leaf()
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; CHECK-NEXT: ret i32 [[A]]
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;
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%a = call i32 @leaf()
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ret i32 %a
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}
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define i32 @leaf() convergent {
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; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
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; CHECK-LABEL: define {{[^@]+}}@leaf
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; CHECK-SAME: () #[[ATTR0]] {
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; CHECK-NEXT: ret i32 0
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;
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ret i32 0
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}
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declare i32 @k() convergent
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define i32 @extern() convergent {
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; CHECK: Function Attrs: convergent
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; CHECK-LABEL: define {{[^@]+}}@extern
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; CHECK-SAME: () #[[ATTR1:[0-9]+]] {
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; CHECK-NEXT: [[A:%.*]] = call i32 @k() #[[ATTR1]]
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; CHECK-NEXT: ret i32 [[A]]
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;
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%a = call i32 @k() convergent
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ret i32 %a
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}
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; Convergent should not be removed on the function here. Although the call is
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; not explicitly convergent, it picks up the convergent attr from the callee.
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define i32 @extern_non_convergent_call() convergent {
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; CHECK: Function Attrs: convergent
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; CHECK-LABEL: define {{[^@]+}}@extern_non_convergent_call
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; CHECK-SAME: () #[[ATTR1]] {
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; CHECK-NEXT: [[A:%.*]] = call i32 @k()
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; CHECK-NEXT: ret i32 [[A]]
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;
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%a = call i32 @k()
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ret i32 %a
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}
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define i32 @indirect_convergent_call(ptr %f) convergent {
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; CHECK: Function Attrs: convergent
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; CHECK-LABEL: define {{[^@]+}}@indirect_convergent_call
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; CHECK-SAME: (ptr readonly captures(none) [[F:%.*]]) #[[ATTR1]] {
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; CHECK-NEXT: [[A:%.*]] = call i32 [[F]]() #[[ATTR1]]
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; CHECK-NEXT: ret i32 [[A]]
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;
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%a = call i32 %f() convergent
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ret i32 %a
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}
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; Give indirect_non_convergent_call the norecurse attribute so we get a
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; "Function Attrs" comment in the output.
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define i32 @indirect_non_convergent_call(ptr %f) convergent norecurse {
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; CHECK: Function Attrs: norecurse
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; CHECK-LABEL: define {{[^@]+}}@indirect_non_convergent_call
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; CHECK-SAME: (ptr readonly captures(none) [[F:%.*]]) #[[ATTR2:[0-9]+]] {
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; CHECK-NEXT: [[A:%.*]] = call i32 [[F]]()
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; CHECK-NEXT: ret i32 [[A]]
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;
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%a = call i32 %f()
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ret i32 %a
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}
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declare void @llvm.nvvm.barrier0() convergent
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define i32 @intrinsic() convergent {
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; Implicitly convergent, because the intrinsic is convergent.
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; CHECK: Function Attrs: convergent norecurse nounwind
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; CHECK-LABEL: define {{[^@]+}}@intrinsic
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; CHECK-SAME: () #[[ATTR4:[0-9]+]] {
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; CHECK-NEXT: call void @llvm.nvvm.barrier0()
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; CHECK-NEXT: ret i32 0
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;
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call void @llvm.nvvm.barrier0()
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ret i32 0
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}
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define i32 @recursive1() convergent {
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; CHECK: Function Attrs: nofree nosync nounwind memory(none)
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; CHECK-LABEL: define {{[^@]+}}@recursive1
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; CHECK-SAME: () #[[ATTR5:[0-9]+]] {
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; CHECK-NEXT: [[A:%.*]] = call i32 @recursive2() #[[ATTR1]]
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; CHECK-NEXT: ret i32 [[A]]
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;
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%a = call i32 @recursive2() convergent
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ret i32 %a
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}
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define i32 @recursive2() convergent {
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; CHECK: Function Attrs: nofree nosync nounwind memory(none)
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; CHECK-LABEL: define {{[^@]+}}@recursive2
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; CHECK-SAME: () #[[ATTR5]] {
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; CHECK-NEXT: [[A:%.*]] = call i32 @recursive1() #[[ATTR1]]
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; CHECK-NEXT: ret i32 [[A]]
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;
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%a = call i32 @recursive1() convergent
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ret i32 %a
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}
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define i32 @noopt() convergent optnone noinline {
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; CHECK: Function Attrs: convergent noinline optnone
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; CHECK-LABEL: define {{[^@]+}}@noopt
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; CHECK-SAME: () #[[ATTR6:[0-9]+]] {
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; CHECK-NEXT: [[A:%.*]] = call i32 @noopt_friend() #[[ATTR1]]
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; CHECK-NEXT: ret i32 0
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;
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%a = call i32 @noopt_friend() convergent
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ret i32 0
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}
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; A function which is mutually-recursive with a convergent, optnone function
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; shouldn't have its convergent attribute stripped.
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define i32 @noopt_friend() convergent {
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; CHECK: Function Attrs: convergent
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; CHECK-LABEL: define {{[^@]+}}@noopt_friend
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; CHECK-SAME: () #[[ATTR1]] {
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; CHECK-NEXT: [[A:%.*]] = call i32 @noopt()
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; CHECK-NEXT: ret i32 0
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;
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%a = call i32 @noopt()
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ret i32 0
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}
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