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4844c8dda8
This commit cleans up the ::initialize method of various AAs in the
following ways:
- If an associated function is required, give up on declarations.
This was discovered as a real problem when lots of llvm.dbg.XXX
call sites were assumed `noreturn` until proven otherwise. That
does not make any sense and caused huge regressions and missed
deductions.
- Require more associated declarations for function interface AAs.
- Use the IRAttribute::initialize to determine if function interface
AAs can be used in IPO, don't replicate the checks (especially
isFunctionIPOAmendable) all over the place. Arguably the function
declaration check should be moved to some central place to.
68 lines
3.0 KiB
LLVM
68 lines
3.0 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 -attributor -enable-new-pm=0 -attributor-manifest-internal -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=1 -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=1 -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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declare void @unknown()
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declare void @bar(i32*)
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define void @foo() {
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; CHECK-LABEL: define {{[^@]+}}@foo() {
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; CHECK-NEXT: [[X:%.*]] = alloca i32, align 4
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; CHECK-NEXT: call void @unknown()
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; CHECK-NEXT: call void @bar(i32* noundef nonnull align 4 dereferenceable(4) [[X]])
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; CHECK-NEXT: ret void
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;
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%x = alloca i32
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call void @unknown()
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call void @bar(i32* %x)
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ret void
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}
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define internal i8* @returned_dead() {
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; CHECK-LABEL: define {{[^@]+}}@returned_dead() {
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; CHECK-NEXT: call void @unknown()
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; CHECK-NEXT: ret i8* undef
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;
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call void @unknown()
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ret i8* null
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}
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define void @caller1() {
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; CHECK-LABEL: define {{[^@]+}}@caller1() {
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; CHECK-NEXT: [[TMP1:%.*]] = call i8* @returned_dead()
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; CHECK-NEXT: ret void
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;
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call i8* @returned_dead()
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ret void
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}
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define internal void @argument_dead_callback_callee(i8* %c) {
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; CHECK-LABEL: define {{[^@]+}}@argument_dead_callback_callee
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; CHECK-SAME: (i8* noalias nocapture nofree readnone align 536870912 [[C:%.*]]) {
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; CHECK-NEXT: call void @unknown()
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; CHECK-NEXT: ret void
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;
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call void @unknown()
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ret void
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}
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define void @callback_caller() {
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; IS__TUNIT____-LABEL: define {{[^@]+}}@callback_caller() {
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; IS__TUNIT____-NEXT: call void @callback_broker(void (i8*)* noundef @argument_dead_callback_callee, i8* noalias nocapture nofree readnone align 536870912 undef)
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; IS__TUNIT____-NEXT: ret void
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;
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; IS__CGSCC____-LABEL: define {{[^@]+}}@callback_caller() {
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; IS__CGSCC____-NEXT: call void @callback_broker(void (i8*)* noundef @argument_dead_callback_callee, i8* noalias nocapture nofree noundef readnone align 536870912 null)
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; IS__CGSCC____-NEXT: ret void
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;
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call void @callback_broker(void (i8*)* @argument_dead_callback_callee, i8* null)
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ret void
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}
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declare !callback !0 void @callback_broker(void (i8*)*, i8*)
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!1 = !{i64 0, i64 1, i1 false}
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!0 = !{!1}
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