cb8faaacb5
Summary: This patch changes call graph analysis to recognize callback call sites and add an artificial 'reference' call record from the broker function caller to the callback function in the call graph. A presence of such reference enforces bottom-up traversal order for callback functions in CG SCC pass manager because callback function logically becomes a callee of the broker function caller. Reviewers: jdoerfert, hfinkel, sstefan1, baziotis Reviewed By: jdoerfert Subscribers: hiraditya, kuter, sstefan1, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D82572
142 lines
9.0 KiB
LLVM
142 lines
9.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --scrub-attributes
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; RUN: opt -attributor -attributor-manifest-internal -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=7 -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=7 -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 -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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;
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; #include <pthread.h>
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;
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; void *GlobalVPtr;
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;
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; static void *foo(void *arg) { return arg; }
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; static void *bar(void *arg) { return arg; }
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;
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; int main() {
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; pthread_t thread;
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; pthread_create(&thread, NULL, foo, NULL);
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; pthread_create(&thread, NULL, bar, &GlobalVPtr);
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; return 0;
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; }
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;
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; Verify the constant values NULL and &GlobalVPtr are propagated into foo and
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; bar, respectively.
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;
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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%union.pthread_attr_t = type { i64, [48 x i8] }
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@GlobalVPtr = common dso_local global i8* null, align 8
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; FIXME: nocapture & noalias for @GlobalVPtr in %call1
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; FIXME: nocapture & noalias for %alloc2 in %call3
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define dso_local i32 @main() {
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; IS__TUNIT____-LABEL: define {{[^@]+}}@main()
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; IS__TUNIT____-NEXT: entry:
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; IS__TUNIT____-NEXT: [[ALLOC1:%.*]] = alloca i8, align 8
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; IS__TUNIT____-NEXT: [[ALLOC2:%.*]] = alloca i8, align 8
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; IS__TUNIT____-NEXT: [[THREAD:%.*]] = alloca i64, align 8
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; IS__TUNIT____-NEXT: [[CALL:%.*]] = call i32 @pthread_create(i64* nonnull align 8 dereferenceable(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture align 536870912 null, i8* (i8*)* nonnull @foo, i8* noalias nocapture nofree readnone align 536870912 undef)
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; IS__TUNIT____-NEXT: [[CALL1:%.*]] = call i32 @pthread_create(i64* nonnull align 8 dereferenceable(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture align 536870912 null, i8* (i8*)* nonnull @bar, i8* noalias nofree nonnull readnone align 8 dereferenceable(8) "no-capture-maybe-returned" undef)
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; IS__TUNIT____-NEXT: [[CALL2:%.*]] = call i32 @pthread_create(i64* nonnull align 8 dereferenceable(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture align 536870912 null, i8* (i8*)* nonnull @baz, i8* noalias nocapture nofree nonnull readnone align 8 dereferenceable(1) [[ALLOC1]])
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; IS__TUNIT____-NEXT: [[CALL3:%.*]] = call i32 @pthread_create(i64* nonnull align 8 dereferenceable(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture align 536870912 null, i8* (i8*)* nonnull @buz, i8* noalias nofree nonnull readnone align 8 dereferenceable(1) "no-capture-maybe-returned" [[ALLOC2]])
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; IS__TUNIT____-NEXT: ret i32 0
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;
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; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@main()
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; IS__CGSCC_OPM-NEXT: entry:
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; IS__CGSCC_OPM-NEXT: [[ALLOC1:%.*]] = alloca i8, align 8
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; IS__CGSCC_OPM-NEXT: [[ALLOC2:%.*]] = alloca i8, align 8
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; IS__CGSCC_OPM-NEXT: [[THREAD:%.*]] = alloca i64, align 8
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; IS__CGSCC_OPM-NEXT: [[CALL:%.*]] = call i32 @pthread_create(i64* nonnull align 8 dereferenceable(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture align 536870912 null, i8* (i8*)* nonnull @foo, i8* noalias nocapture nofree readnone align 536870912 null)
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; IS__CGSCC_OPM-NEXT: [[CALL1:%.*]] = call i32 @pthread_create(i64* nonnull align 8 dereferenceable(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture align 536870912 null, i8* (i8*)* nonnull @bar, i8* noalias nofree nonnull readnone align 8 dereferenceable(8) bitcast (i8** @GlobalVPtr to i8*))
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; IS__CGSCC_OPM-NEXT: [[CALL2:%.*]] = call i32 @pthread_create(i64* nonnull align 8 dereferenceable(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture align 536870912 null, i8* (i8*)* nonnull @baz, i8* noalias nocapture nofree nonnull readnone align 8 dereferenceable(1) [[ALLOC1]])
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; IS__CGSCC_OPM-NEXT: [[CALL3:%.*]] = call i32 @pthread_create(i64* nonnull align 8 dereferenceable(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture align 536870912 null, i8* (i8*)* nonnull @buz, i8* noalias nofree nonnull readnone align 8 dereferenceable(1) [[ALLOC2]])
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; IS__CGSCC_OPM-NEXT: ret i32 0
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;
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; IS__CGSCC_NPM-LABEL: define {{[^@]+}}@main()
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; IS__CGSCC_NPM-NEXT: entry:
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; IS__CGSCC_NPM-NEXT: [[ALLOC1:%.*]] = alloca i8, align 8
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; IS__CGSCC_NPM-NEXT: [[ALLOC2:%.*]] = alloca i8, align 8
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; IS__CGSCC_NPM-NEXT: [[THREAD:%.*]] = alloca i64, align 8
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; IS__CGSCC_NPM-NEXT: [[CALL:%.*]] = call i32 @pthread_create(i64* nonnull align 8 dereferenceable(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture align 536870912 null, i8* (i8*)* nonnull @foo, i8* noalias nocapture nofree readnone align 536870912 null)
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; IS__CGSCC_NPM-NEXT: [[CALL1:%.*]] = call i32 @pthread_create(i64* nonnull align 8 dereferenceable(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture align 536870912 null, i8* (i8*)* nonnull @bar, i8* noalias nofree nonnull readnone align 8 dereferenceable(8) bitcast (i8** @GlobalVPtr to i8*))
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; IS__CGSCC_NPM-NEXT: [[CALL2:%.*]] = call i32 @pthread_create(i64* nonnull align 8 dereferenceable(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture align 536870912 null, i8* (i8*)* nonnull @baz, i8* noalias nocapture nofree nonnull readnone align 8 dereferenceable(1) [[ALLOC1]])
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; IS__CGSCC_NPM-NEXT: [[CALL3:%.*]] = call i32 @pthread_create(i64* nonnull align 8 dereferenceable(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture align 536870912 null, i8* (i8*)* nonnull @buz, i8* noalias nofree nonnull readnone align 8 dereferenceable(1) [[ALLOC2]])
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; IS__CGSCC_NPM-NEXT: ret i32 0
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;
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entry:
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%alloc1 = alloca i8, align 8
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%alloc2 = alloca i8, align 8
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%thread = alloca i64, align 8
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%call = call i32 @pthread_create(i64* nonnull %thread, %union.pthread_attr_t* null, i8* (i8*)* nonnull @foo, i8* null)
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%call1 = call i32 @pthread_create(i64* nonnull %thread, %union.pthread_attr_t* null, i8* (i8*)* nonnull @bar, i8* bitcast (i8** @GlobalVPtr to i8*))
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%call2 = call i32 @pthread_create(i64* nonnull %thread, %union.pthread_attr_t* null, i8* (i8*)* nonnull @baz, i8* nocapture %alloc1)
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%call3 = call i32 @pthread_create(i64* nonnull %thread, %union.pthread_attr_t* null, i8* (i8*)* nonnull @buz, i8* %alloc2)
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ret i32 0
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}
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declare !callback !0 dso_local i32 @pthread_create(i64*, %union.pthread_attr_t*, i8* (i8*)*, i8*)
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define internal i8* @foo(i8* %arg) {
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; CHECK-LABEL: define {{[^@]+}}@foo
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; CHECK-SAME: (i8* noalias nofree readnone returned align 536870912 "no-capture-maybe-returned" [[ARG:%.*]])
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; CHECK-NEXT: entry:
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; CHECK-NEXT: ret i8* null
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;
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entry:
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ret i8* %arg
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}
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define internal i8* @bar(i8* %arg) {
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; IS__TUNIT____-LABEL: define {{[^@]+}}@bar
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; IS__TUNIT____-SAME: (i8* noalias nofree nonnull readnone returned align 8 dereferenceable(8) "no-capture-maybe-returned" [[ARG:%.*]])
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; IS__TUNIT____-NEXT: entry:
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; IS__TUNIT____-NEXT: ret i8* bitcast (i8** @GlobalVPtr to i8*)
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;
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; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@bar
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; IS__CGSCC_OPM-SAME: (i8* nofree readnone returned "no-capture-maybe-returned" [[ARG:%.*]])
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; IS__CGSCC_OPM-NEXT: entry:
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; IS__CGSCC_OPM-NEXT: ret i8* bitcast (i8** @GlobalVPtr to i8*)
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;
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; IS__CGSCC_NPM-LABEL: define {{[^@]+}}@bar
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; IS__CGSCC_NPM-SAME: (i8* nofree readnone returned "no-capture-maybe-returned" [[ARG:%.*]])
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; IS__CGSCC_NPM-NEXT: entry:
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; IS__CGSCC_NPM-NEXT: ret i8* bitcast (i8** @GlobalVPtr to i8*)
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;
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entry:
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ret i8* %arg
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}
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define internal i8* @baz(i8* %arg) {
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; IS__TUNIT____-LABEL: define {{[^@]+}}@baz
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; IS__TUNIT____-SAME: (i8* noalias nofree nonnull readnone returned align 8 dereferenceable(1) "no-capture-maybe-returned" [[ARG:%.*]])
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; IS__TUNIT____-NEXT: entry:
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; IS__TUNIT____-NEXT: ret i8* [[ARG]]
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;
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; IS__CGSCC____-LABEL: define {{[^@]+}}@baz
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; IS__CGSCC____-SAME: (i8* nofree nonnull readnone returned align 8 dereferenceable(1) "no-capture-maybe-returned" [[ARG:%.*]])
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; IS__CGSCC____-NEXT: entry:
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; IS__CGSCC____-NEXT: ret i8* [[ARG]]
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;
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entry:
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ret i8* %arg
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}
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define internal i8* @buz(i8* %arg) {
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; IS__TUNIT____-LABEL: define {{[^@]+}}@buz
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; IS__TUNIT____-SAME: (i8* noalias nofree nonnull readnone returned align 8 dereferenceable(1) "no-capture-maybe-returned" [[ARG:%.*]])
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; IS__TUNIT____-NEXT: entry:
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; IS__TUNIT____-NEXT: ret i8* [[ARG]]
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;
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; IS__CGSCC____-LABEL: define {{[^@]+}}@buz
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; IS__CGSCC____-SAME: (i8* nofree nonnull readnone returned align 8 dereferenceable(1) "no-capture-maybe-returned" [[ARG:%.*]])
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; IS__CGSCC____-NEXT: entry:
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; IS__CGSCC____-NEXT: ret i8* [[ARG]]
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;
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entry:
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ret i8* %arg
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}
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!1 = !{i64 2, i64 3, i1 false}
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!0 = !{!1}
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