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.
135 lines
4.5 KiB
LLVM
135 lines
4.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --check-attributes --check-globals
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; RUN: opt -passes=attributor -S %s | FileCheck %s
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@var1 = internal global [1 x i32] undef
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@var2 = internal global i32 0
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;.
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; CHECK: @var1 = internal global [1 x i32] undef
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; CHECK: @var2 = internal global i32 0
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;.
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define ptr addrspace(1) @foo(ptr addrspace(4) %arg) {
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; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
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; CHECK-LABEL: define {{[^@]+}}@foo
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; CHECK-SAME: (ptr addrspace(4) nofree readnone [[ARG:%.*]]) #[[ATTR0:[0-9]+]] {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TMP0:%.*]] = addrspacecast ptr addrspace(4) [[ARG]] to ptr addrspace(1)
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; CHECK-NEXT: ret ptr addrspace(1) [[TMP0]]
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;
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entry:
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%0 = addrspacecast ptr addrspace(4) %arg to ptr addrspace(1)
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ret ptr addrspace(1) %0
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}
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define ptr @func1() {
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; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
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; CHECK-LABEL: define {{[^@]+}}@func1
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; CHECK-SAME: () #[[ATTR0]] {
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; CHECK-NEXT: ret ptr @var1
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;
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%ptr = call ptr @func1a(ptr @var1)
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ret ptr %ptr
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}
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define internal ptr @func1a(ptr %arg) {
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ret ptr %arg
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}
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define internal void @func2a(ptr %0) {
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; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(write)
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; CHECK-LABEL: define {{[^@]+}}@func2a
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; CHECK-SAME: (ptr nofree nonnull writeonly align 4 captures(none) dereferenceable(4) [[TMP0:%.*]]) #[[ATTR1:[0-9]+]] {
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; CHECK-NEXT: ret void
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;
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store i32 0, ptr %0
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ret void
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}
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define i32 @func2() {
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; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(write)
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; CHECK-LABEL: define {{[^@]+}}@func2
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; CHECK-SAME: () #[[ATTR1]] {
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; CHECK-NEXT: [[TMP1:%.*]] = tail call i32 (ptr, ...) @func2a(ptr nofree nonnull writeonly align 4 captures(none) dereferenceable(4) undef) #[[ATTR3:[0-9]+]]
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; CHECK-NEXT: ret i32 0
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;
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%1 = tail call i32 (ptr, ...) @func2a(ptr @var2)
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%2 = load i32, ptr @var2
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ret i32 %2
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}
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define i32 @func3(i1 %false) {
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; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(write)
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; CHECK-LABEL: define {{[^@]+}}@func3
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; CHECK-SAME: (i1 [[FALSE:%.*]]) #[[ATTR1]] {
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; CHECK-NEXT: [[TMP1:%.*]] = tail call i32 (ptr, ...) @func2a(ptr nofree nonnull writeonly align 4 captures(none) dereferenceable(4) undef) #[[ATTR3]]
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; CHECK-NEXT: br i1 [[FALSE]], label [[USE_BB:%.*]], label [[RET_BB:%.*]]
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; CHECK: use_bb:
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; CHECK-NEXT: ret i32 [[TMP1]]
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; CHECK: ret_bb:
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; CHECK-NEXT: ret i32 0
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;
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%1 = tail call i32 (ptr, ...) @func2a(ptr @var2)
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br i1 %false, label %use_bb, label %ret_bb
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use_bb:
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ret i32 %1
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ret_bb:
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%2 = load i32, ptr @var2
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ret i32 %2
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}
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define void @func4() {
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; CHECK-LABEL: define {{[^@]+}}@func4() {
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; CHECK-NEXT: call void @func5()
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; CHECK-NEXT: ret void
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;
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call void @func5(i32 0)
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ret void
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}
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define internal void @func5(i32 %0) {
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; CHECK: Function Attrs: memory(readwrite, argmem: none)
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; CHECK-LABEL: define {{[^@]+}}@func5
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; CHECK-SAME: () #[[ATTR2:[0-9]+]] {
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; CHECK-NEXT: br label [[BLOCK:%.*]]
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; CHECK: block:
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; CHECK-NEXT: call void @func6(ptr blockaddress(@func5, [[BLOCK]]))
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; CHECK-NEXT: ret void
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;
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%tmp = alloca ptr
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br label %block
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block:
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store ptr blockaddress(@func5, %block), ptr %tmp
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%addr = load ptr, ptr %tmp
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call void @func6(ptr %addr)
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ret void
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}
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define i16 @foo3() {
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; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
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; CHECK-LABEL: define {{[^@]+}}@foo3
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; CHECK-SAME: () #[[ATTR0]] {
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; CHECK-NEXT: [[CALL:%.*]] = call i16 @bar3() #[[ATTR4:[0-9]+]]
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; CHECK-NEXT: ret i16 [[CALL]]
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;
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%call = call i16 @bar3()
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ret i16 %call
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}
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define internal i16 @bar3(ptr %p1, i16 %p2) {
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; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
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; CHECK-LABEL: define {{[^@]+}}@bar3
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; CHECK-SAME: (ptr nofree readnone captures(none) [[P1:%.*]], i16 returned [[P2:%.*]]) #[[ATTR0]] {
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; CHECK-NEXT: ret i16 [[P2]]
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;
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ret i16 %p2
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}
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declare void @func6(ptr)
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;.
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; CHECK: attributes #[[ATTR0]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(none) }
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; CHECK: attributes #[[ATTR1]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(write) }
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; CHECK: attributes #[[ATTR2]] = { memory(readwrite, argmem: none) }
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; CHECK: attributes #[[ATTR3]] = { nofree nosync nounwind willreturn memory(write) }
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; CHECK: attributes #[[ATTR4]] = { nofree nosync nounwind willreturn memory(none) }
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;.
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