f3ad8cf00e
There was some ad-hoc handling of liveness and manifest to avoid breaking CGSCC guarantees. Things always slipped through though. This cleanup will: 1) Prevent us from manifesting any "information" outside the CGSCC. This might be too conservative but we need to opt-in to annotation not try to avoid some problematic ones. 2) Avoid running any liveness analysis outside the CGSCC. We did have some AAIsDeadFunction handling to this end but we need this for all AAIsDead classes. The reason is that AAIsDead information is only correct if we actually manifest it, since we don't (see point 1) we cannot actually derive/use it at all. We are currently trying to avoid running any AA updates outside the CGSCC but that seems to impact things quite a bit. 3) Assert, don't check, that our modifications (during cleanup) modifies only CGSCC functions.
51 lines
2.7 KiB
LLVM
51 lines
2.7 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 -attributor -enable-new-pm=0 -attributor-manifest-internal -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=2 -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_CGSCC_NPM,NOT_CGSCC_OPM,NOT_TUNIT_NPM,IS__TUNIT____,IS________OPM,IS__TUNIT_OPM
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; RUN: opt -aa-pipeline=basic-aa -passes=attributor -attributor-manifest-internal -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=2 -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_CGSCC_OPM,NOT_CGSCC_NPM,NOT_TUNIT_OPM,IS__TUNIT____,IS________NPM,IS__TUNIT_NPM
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; RUN: opt -attributor-cgscc -enable-new-pm=0 -attributor-manifest-internal -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_TUNIT_NPM,NOT_TUNIT_OPM,NOT_CGSCC_NPM,IS__CGSCC____,IS________OPM,IS__CGSCC_OPM
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; RUN: opt -aa-pipeline=basic-aa -passes=attributor-cgscc -attributor-manifest-internal -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_TUNIT_NPM,NOT_TUNIT_OPM,NOT_CGSCC_OPM,IS__CGSCC____,IS________NPM,IS__CGSCC_NPM
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; Don't promote around control flow.
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define internal i32 @callee(i1 %C, i32* %P) {
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; CHECK: Function Attrs: argmemonly nofree norecurse nosync nounwind readonly willreturn
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; CHECK-LABEL: define {{[^@]+}}@callee
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; CHECK-SAME: (i1 [[C:%.*]], i32* nocapture nofree readonly [[P:%.*]]) #[[ATTR0:[0-9]+]] {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
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; CHECK: T:
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; CHECK-NEXT: ret i32 17
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; CHECK: F:
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; CHECK-NEXT: [[X:%.*]] = load i32, i32* [[P]], align 4
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; CHECK-NEXT: ret i32 [[X]]
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;
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entry:
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br i1 %C, label %T, label %F
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T:
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ret i32 17
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F:
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%X = load i32, i32* %P
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ret i32 %X
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}
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define i32 @foo(i1 %C, i32* %P) {
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; CHECK: Function Attrs: argmemonly nofree norecurse nosync nounwind readonly willreturn
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; CHECK-LABEL: define {{[^@]+}}@foo
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; CHECK-SAME: (i1 [[C:%.*]], i32* nocapture nofree readonly [[P:%.*]]) #[[ATTR0]] {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[X:%.*]] = call i32 @callee(i1 [[C]], i32* nocapture nofree readonly [[P]]) #[[ATTR1:[0-9]+]]
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; CHECK-NEXT: ret i32 [[X]]
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;
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entry:
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%X = call i32 @callee(i1 %C, i32* %P)
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ret i32 %X
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}
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;.
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; IS__TUNIT____: attributes #[[ATTR0]] = { argmemonly nofree norecurse nosync nounwind readonly willreturn }
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; IS__TUNIT____: attributes #[[ATTR1]] = { nofree nosync nounwind readonly willreturn }
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;.
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; IS__CGSCC____: attributes #[[ATTR0]] = { argmemonly nofree norecurse nosync nounwind readonly willreturn }
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; IS__CGSCC____: attributes #[[ATTR1]] = { readonly willreturn }
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;.
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