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https://github.com/RPCS3/llvm-mirror.git
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723f4e91f2
We should never give up on AAIsDead as it guards other AAs from unreachable code (in which SSA properties are meaningless). We did however use required dependences on some queries in AAIsDead which caused us to invalidate AAIsDead if the queried AA got invalidated. We now use optional dependences instead. The bug that exposed this is added to the liveness.ll test and other test changes show the impact. Bug report by @sdmitriev.
418 lines
16 KiB
LLVM
418 lines
16 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=11 -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=11 -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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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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; Test cases specifically designed for the "nofree" function attribute.
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; We use FIXME's to indicate problems and missing attributes.
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; Free functions
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declare void @free(i8* nocapture) local_unnamed_addr #1
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declare noalias i8* @realloc(i8* nocapture, i64) local_unnamed_addr #0
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declare void @_ZdaPv(i8*) local_unnamed_addr #2
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; TEST 1 (positive case)
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; IS__TUNIT____: Function Attrs: nofree noinline nosync nounwind readnone uwtable
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; IS__CGSCC____: Function Attrs: nofree noinline norecurse nosync nounwind readnone uwtable
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define void @only_return() #0 {
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; CHECK-LABEL: define {{[^@]+}}@only_return()
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; CHECK-NEXT: ret void
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;
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ret void
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}
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; TEST 2 (negative case)
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; Only free
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; void only_free(char* p) {
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; free(p);
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; }
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; CHECK: Function Attrs: noinline nounwind uwtable
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; CHECK-NOT: nofree
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define void @only_free(i8* nocapture %0) local_unnamed_addr #0 {
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; CHECK-LABEL: define {{[^@]+}}@only_free
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; CHECK-SAME: (i8* nocapture [[TMP0:%.*]]) local_unnamed_addr
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; CHECK-NEXT: tail call void @free(i8* nocapture [[TMP0]])
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; CHECK-NEXT: ret void
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;
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tail call void @free(i8* %0) #1
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ret void
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}
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; TEST 3 (negative case)
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; Free occurs in same scc.
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; void free_in_scc1(char*p){
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; free_in_scc2(p);
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; }
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; void free_in_scc2(char*p){
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; free_in_scc1(p);
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; free(p);
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; }
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define void @free_in_scc1(i8* nocapture %0) local_unnamed_addr #0 {
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; CHECK-LABEL: define {{[^@]+}}@free_in_scc1
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; CHECK-SAME: (i8* nocapture [[TMP0:%.*]]) local_unnamed_addr
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; CHECK-NEXT: tail call void @free_in_scc2(i8* nocapture [[TMP0]])
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; CHECK-NEXT: ret void
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;
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tail call void @free_in_scc2(i8* %0) #1
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ret void
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}
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; CHECK: Function Attrs: noinline nounwind uwtable
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; CHECK-NOT: nofree
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define void @free_in_scc2(i8* nocapture %0) local_unnamed_addr #0 {
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; CHECK-LABEL: define {{[^@]+}}@free_in_scc2
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; CHECK-SAME: (i8* nocapture [[TMP0:%.*]]) local_unnamed_addr
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8* [[TMP0]], null
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; CHECK-NEXT: br i1 [[CMP]], label [[REC:%.*]], label [[CALL:%.*]]
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; CHECK: call:
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; CHECK-NEXT: tail call void @free(i8* nocapture [[TMP0]])
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; CHECK-NEXT: br label [[END:%.*]]
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; CHECK: rec:
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; CHECK-NEXT: tail call void @free_in_scc1(i8* nocapture [[TMP0]])
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; CHECK-NEXT: br label [[END]]
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; CHECK: end:
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; CHECK-NEXT: ret void
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;
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%cmp = icmp eq i8* %0, null
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br i1 %cmp, label %rec, label %call
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call:
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tail call void @free(i8* %0) #1
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br label %end
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rec:
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tail call void @free_in_scc1(i8* %0)
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br label %end
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end:
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ret void
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}
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; TEST 4 (positive case)
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; Free doesn't occur.
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; void mutual_recursion1(){
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; mutual_recursion2();
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; }
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; void mutual_recursion2(){
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; mutual_recursion1();
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; }
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; NOT_CGSCC_NPM: Function Attrs: nofree noinline noreturn nosync nounwind readnone uwtable
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; IS__CGSCC_NPM: Function Attrs: nofree noinline norecurse noreturn nosync nounwind readnone uwtable
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define void @mutual_recursion1() #0 {
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; CHECK-LABEL: define {{[^@]+}}@mutual_recursion1()
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; CHECK-NEXT: unreachable
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;
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call void @mutual_recursion2()
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ret void
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}
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; NOT_CGSCC_NPM: Function Attrs: nofree noinline noreturn nosync nounwind readnone uwtable
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; IS__CGSCC_NPM: Function Attrs: nofree noinline norecurse noreturn nosync nounwind readnone uwtable
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define void @mutual_recursion2() #0 {
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; CHECK-LABEL: define {{[^@]+}}@mutual_recursion2()
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; CHECK-NEXT: unreachable
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;
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call void @mutual_recursion1()
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ret void
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}
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; TEST 5
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; C++ delete operation (negative case)
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; void delete_op (char p[]){
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; delete [] p;
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; }
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; CHECK: Function Attrs: noinline nounwind uwtable
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; CHECK-NOT: nofree
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define void @_Z9delete_opPc(i8* %0) local_unnamed_addr #0 {
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; CHECK-LABEL: define {{[^@]+}}@_Z9delete_opPc
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; CHECK-SAME: (i8* [[TMP0:%.*]]) local_unnamed_addr
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; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i8* [[TMP0]], null
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; CHECK-NEXT: br i1 [[TMP2]], label [[TMP4:%.*]], label [[TMP3:%.*]]
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; CHECK: 3:
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; CHECK-NEXT: tail call void @_ZdaPv(i8* nonnull [[TMP0]])
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; CHECK-NEXT: br label [[TMP4]]
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; CHECK: 4:
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; CHECK-NEXT: ret void
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;
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%2 = icmp eq i8* %0, null
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br i1 %2, label %4, label %3
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; <label>:3: ; preds = %1
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tail call void @_ZdaPv(i8* nonnull %0) #2
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br label %4
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; <label>:4: ; preds = %3, %1
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ret void
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}
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; TEST 6 (negative case)
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; Call realloc
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; CHECK: Function Attrs: noinline nounwind uwtable
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; CHECK-NOT: nofree
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define noalias i8* @call_realloc(i8* nocapture %0, i64 %1) local_unnamed_addr #0 {
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; CHECK-LABEL: define {{[^@]+}}@call_realloc
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; CHECK-SAME: (i8* nocapture [[TMP0:%.*]], i64 [[TMP1:%.*]]) local_unnamed_addr
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; CHECK-NEXT: [[RET:%.*]] = tail call i8* @realloc(i8* nocapture [[TMP0]], i64 [[TMP1]])
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; CHECK-NEXT: ret i8* [[RET]]
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;
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%ret = tail call i8* @realloc(i8* %0, i64 %1) #2
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ret i8* %ret
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}
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; TEST 7 (positive case)
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; Call function declaration with "nofree"
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; CHECK: Function Attrs: nofree noinline nounwind readnone uwtable
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; CHECK-NEXT: declare void @nofree_function()
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declare void @nofree_function() nofree readnone #0
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; IS__TUNIT____: Function Attrs: nofree noinline nosync nounwind readnone uwtable
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; IS__CGSCC____: Function Attrs: nofree noinline norecurse nosync nounwind readnone uwtable
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define void @call_nofree_function() #0 {
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; CHECK-LABEL: define {{[^@]+}}@call_nofree_function()
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; CHECK-NEXT: ret void
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;
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tail call void @nofree_function()
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ret void
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}
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; TEST 8 (negative case)
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; Call function declaration without "nofree"
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; CHECK: Function Attrs: noinline nounwind uwtable
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; CHECK-NEXT: declare void @maybe_free()
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declare void @maybe_free() #0
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; CHECK: Function Attrs: noinline nounwind uwtable
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; CHECK-NOT: nofree
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define void @call_maybe_free() #0 {
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; CHECK-LABEL: define {{[^@]+}}@call_maybe_free()
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; CHECK-NEXT: tail call void @maybe_free()
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; CHECK-NEXT: ret void
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;
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tail call void @maybe_free()
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ret void
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}
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; TEST 9 (negative case)
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; Call both of above functions
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; CHECK: Function Attrs: noinline nounwind uwtable
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; CHECK-NOT: nofree
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define void @call_both() #0 {
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; CHECK-LABEL: define {{[^@]+}}@call_both()
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; CHECK-NEXT: tail call void @maybe_free()
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; CHECK-NEXT: ret void
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;
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tail call void @maybe_free()
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tail call void @nofree_function()
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ret void
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}
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; TEST 10 (positive case)
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; Call intrinsic function
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; CHECK: Function Attrs: nounwind readnone speculatable
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; CHECK-NEXT: declare float @llvm.floor.f32(float)
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declare float @llvm.floor.f32(float)
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; IS__TUNIT____: Function Attrs: nofree noinline nosync nounwind readnone uwtable
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; IS__CGSCC____: Function Attrs: nofree noinline norecurse nosync nounwind readnone uwtable
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define void @call_floor(float %a) #0 {
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; CHECK-LABEL: define {{[^@]+}}@call_floor
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; CHECK-SAME: (float [[A:%.*]])
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; CHECK-NEXT: ret void
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;
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tail call float @llvm.floor.f32(float %a)
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ret void
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}
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; FIXME: missing nofree
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; CHECK: Function Attrs: noinline nosync nounwind readnone uwtable
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define float @call_floor2(float %a) #0 {
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; CHECK-LABEL: define {{[^@]+}}@call_floor2
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; CHECK-SAME: (float [[A:%.*]])
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; CHECK-NEXT: [[C:%.*]] = tail call float @llvm.floor.f32(float [[A]])
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; CHECK-NEXT: ret float [[C]]
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;
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%c = tail call float @llvm.floor.f32(float %a)
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ret float %c
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}
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; TEST 11 (positive case)
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; Check propagation.
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; IS__TUNIT____: Function Attrs: nofree noinline nosync nounwind readnone uwtable
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; IS__CGSCC____: Function Attrs: nofree noinline norecurse nosync nounwind readnone uwtable
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define void @f1() #0 {
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; CHECK-LABEL: define {{[^@]+}}@f1()
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; CHECK-NEXT: ret void
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;
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tail call void @nofree_function()
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ret void
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}
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; IS__TUNIT____: Function Attrs: nofree noinline nosync nounwind readnone uwtable
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; IS__CGSCC____: Function Attrs: nofree noinline norecurse nosync nounwind readnone uwtable
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define void @f2() #0 {
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; CHECK-LABEL: define {{[^@]+}}@f2()
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; CHECK-NEXT: ret void
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;
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tail call void @f1()
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ret void
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}
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; TEST 12 NoFree argument - positive.
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define double @test12(double* nocapture readonly %a) {
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; CHECK-LABEL: define {{[^@]+}}@test12
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; CHECK-SAME: (double* nocapture nofree nonnull readonly align 8 dereferenceable(8) [[A:%.*]])
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TMP0:%.*]] = load double, double* [[A]], align 8
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; CHECK-NEXT: [[CALL:%.*]] = tail call double @cos(double [[TMP0]])
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; CHECK-NEXT: ret double [[CALL]]
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;
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entry:
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%0 = load double, double* %a, align 8
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%call = tail call double @cos(double %0) #2
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ret double %call
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}
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declare double @cos(double) nobuiltin nounwind nofree
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; FIXME: %a should be nofree.
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; TEST 13 NoFree argument - positive.
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define noalias i32* @test13(i64* nocapture readonly %a) {
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; CHECK-LABEL: define {{[^@]+}}@test13
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; CHECK-SAME: (i64* nocapture nonnull readonly align 8 dereferenceable(8) [[A:%.*]])
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TMP0:%.*]] = load i64, i64* [[A]], align 8
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; CHECK-NEXT: [[CALL:%.*]] = tail call noalias i8* @malloc(i64 [[TMP0]])
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; CHECK-NEXT: [[TMP1:%.*]] = bitcast i8* [[CALL]] to i32*
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; CHECK-NEXT: ret i32* [[TMP1]]
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;
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entry:
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%0 = load i64, i64* %a, align 8
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%call = tail call noalias i8* @malloc(i64 %0) #2
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%1 = bitcast i8* %call to i32*
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ret i32* %1
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}
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define void @test14(i8* nocapture %0, i8* nocapture %1) {
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; CHECK-LABEL: define {{[^@]+}}@test14
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; CHECK-SAME: (i8* nocapture [[TMP0:%.*]], i8* nocapture nofree readnone [[TMP1:%.*]])
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; CHECK-NEXT: tail call void @free(i8* nocapture [[TMP0]])
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; CHECK-NEXT: ret void
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;
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tail call void @free(i8* %0) #1
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ret void
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}
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; UTC_ARGS: --enable
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define void @nonnull_assume_pos(i8* %arg1, i8* %arg2, i8* %arg3, i8* %arg4) {
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; ATTRIBUTOR-LABEL: define {{[^@]+}}@nonnull_assume_pos
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; ATTRIBUTOR-SAME: (i8* nofree [[ARG1:%.*]], i8* [[ARG2:%.*]], i8* nofree [[ARG3:%.*]], i8* [[ARG4:%.*]])
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; ATTRIBUTOR-NEXT: call void @llvm.assume(i1 true) #11 [ "nofree"(i8* [[ARG1]]), "nofree"(i8* [[ARG3]]) ]
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; ATTRIBUTOR-NEXT: call void @unknown(i8* nofree [[ARG1]], i8* [[ARG2]], i8* nofree [[ARG3]], i8* [[ARG4]])
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; ATTRIBUTOR-NEXT: ret void
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;
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; CHECK-LABEL: define {{[^@]+}}@nonnull_assume_pos
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; CHECK-SAME: (i8* nofree [[ARG1:%.*]], i8* [[ARG2:%.*]], i8* nofree [[ARG3:%.*]], i8* [[ARG4:%.*]])
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; CHECK-NEXT: call void @llvm.assume(i1 true) #11 [ "nofree"(i8* [[ARG1]]), "nofree"(i8* [[ARG3]]) ]
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; CHECK-NEXT: call void @unknown(i8* nofree [[ARG1]], i8* [[ARG2]], i8* nofree [[ARG3]], i8* [[ARG4]])
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; CHECK-NEXT: ret void
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;
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call void @llvm.assume(i1 true) ["nofree"(i8* %arg1), "nofree"(i8* %arg3)]
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call void @unknown(i8* %arg1, i8* %arg2, i8* %arg3, i8* %arg4)
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ret void
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}
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define void @nonnull_assume_neg(i8* %arg1, i8* %arg2, i8* %arg3, i8* %arg4) {
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; ATTRIBUTOR-LABEL: define {{[^@]+}}@nonnull_assume_neg
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; ATTRIBUTOR-SAME: (i8* [[ARG1:%.*]], i8* [[ARG2:%.*]], i8* [[ARG3:%.*]], i8* [[ARG4:%.*]])
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; ATTRIBUTOR-NEXT: call void @unknown(i8* [[ARG1]], i8* [[ARG2]], i8* [[ARG3]], i8* [[ARG4]])
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; ATTRIBUTOR-NEXT: call void @llvm.assume(i1 true) [ "nofree"(i8* [[ARG1]]), "nofree"(i8* [[ARG3]]) ]
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; ATTRIBUTOR-NEXT: ret void
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;
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; CHECK-LABEL: define {{[^@]+}}@nonnull_assume_neg
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; CHECK-SAME: (i8* [[ARG1:%.*]], i8* [[ARG2:%.*]], i8* [[ARG3:%.*]], i8* [[ARG4:%.*]])
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; CHECK-NEXT: call void @unknown(i8* [[ARG1]], i8* [[ARG2]], i8* [[ARG3]], i8* [[ARG4]])
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; CHECK-NEXT: call void @llvm.assume(i1 true) [ "nofree"(i8* [[ARG1]]), "nofree"(i8* [[ARG3]]) ]
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; CHECK-NEXT: ret void
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;
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call void @unknown(i8* %arg1, i8* %arg2, i8* %arg3, i8* %arg4)
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call void @llvm.assume(i1 true) ["nofree"(i8* %arg1), "nofree"(i8* %arg3)]
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ret void
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}
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define void @nonnull_assume_call(i8* %arg1, i8* %arg2, i8* %arg3, i8* %arg4) {
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; ATTRIBUTOR-LABEL: define {{[^@]+}}@nonnull_assume_call
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; ATTRIBUTOR-SAME: (i8* [[ARG1:%.*]], i8* [[ARG2:%.*]], i8* [[ARG3:%.*]], i8* [[ARG4:%.*]])
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; ATTRIBUTOR-NEXT: call void @unknown(i8* [[ARG1]], i8* [[ARG2]], i8* [[ARG3]], i8* [[ARG4]])
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; ATTRIBUTOR-NEXT: call void @use_i8_ptr(i8* noalias readnone [[ARG1]])
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; ATTRIBUTOR-NEXT: call void @use_i8_ptr(i8* noalias readnone [[ARG2]])
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; ATTRIBUTOR-NEXT: call void @llvm.assume(i1 true) [ "nofree"(i8* [[ARG1]]), "nofree"(i8* [[ARG3]]) ]
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; ATTRIBUTOR-NEXT: call void @use_i8_ptr(i8* noalias nofree readnone [[ARG3]])
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; ATTRIBUTOR-NEXT: call void @use_i8_ptr(i8* noalias readnone [[ARG4]])
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; ATTRIBUTOR-NEXT: call void @use_i8_ptr_ret(i8* noalias nofree readnone [[ARG1]])
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; ATTRIBUTOR-NEXT: call void @use_i8_ptr_ret(i8* noalias readnone [[ARG2]])
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; ATTRIBUTOR-NEXT: call void @llvm.assume(i1 true) [ "nofree"(i8* [[ARG1]]), "nofree"(i8* [[ARG4]]) ]
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; ATTRIBUTOR-NEXT: call void @use_i8_ptr_ret(i8* noalias nofree readnone [[ARG3]])
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; ATTRIBUTOR-NEXT: call void @use_i8_ptr_ret(i8* noalias nofree readnone [[ARG4]])
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; ATTRIBUTOR-NEXT: ret void
|
|
;
|
|
; CHECK-LABEL: define {{[^@]+}}@nonnull_assume_call
|
|
; CHECK-SAME: (i8* [[ARG1:%.*]], i8* [[ARG2:%.*]], i8* [[ARG3:%.*]], i8* [[ARG4:%.*]])
|
|
; CHECK-NEXT: call void @unknown(i8* [[ARG1]], i8* [[ARG2]], i8* [[ARG3]], i8* [[ARG4]])
|
|
; CHECK-NEXT: call void @use_i8_ptr(i8* noalias nocapture readnone [[ARG1]])
|
|
; CHECK-NEXT: call void @use_i8_ptr(i8* noalias nocapture readnone [[ARG2]])
|
|
; CHECK-NEXT: call void @llvm.assume(i1 true) [ "nofree"(i8* [[ARG1]]), "nofree"(i8* [[ARG3]]) ]
|
|
; CHECK-NEXT: call void @use_i8_ptr(i8* noalias nocapture nofree readnone [[ARG3]])
|
|
; CHECK-NEXT: call void @use_i8_ptr(i8* noalias nocapture readnone [[ARG4]])
|
|
; CHECK-NEXT: call void @use_i8_ptr_ret(i8* noalias nocapture nofree readnone [[ARG1]])
|
|
; CHECK-NEXT: call void @use_i8_ptr_ret(i8* noalias nocapture readnone [[ARG2]])
|
|
; CHECK-NEXT: call void @llvm.assume(i1 true) [ "nofree"(i8* [[ARG1]]), "nofree"(i8* [[ARG4]]) ]
|
|
; CHECK-NEXT: call void @use_i8_ptr_ret(i8* noalias nocapture nofree readnone [[ARG3]])
|
|
; CHECK-NEXT: call void @use_i8_ptr_ret(i8* noalias nocapture nofree readnone [[ARG4]])
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
call void @unknown(i8* %arg1, i8* %arg2, i8* %arg3, i8* %arg4)
|
|
call void @use_i8_ptr(i8* %arg1)
|
|
call void @use_i8_ptr(i8* %arg2)
|
|
call void @llvm.assume(i1 true) ["nofree"(i8* %arg1), "nofree"(i8* %arg3)]
|
|
call void @use_i8_ptr(i8* %arg3)
|
|
call void @use_i8_ptr(i8* %arg4)
|
|
call void @use_i8_ptr_ret(i8* %arg1)
|
|
call void @use_i8_ptr_ret(i8* %arg2)
|
|
call void @llvm.assume(i1 true) ["nofree"(i8* %arg1), "nofree"(i8* %arg4)]
|
|
call void @use_i8_ptr_ret(i8* %arg3)
|
|
call void @use_i8_ptr_ret(i8* %arg4)
|
|
ret void
|
|
}
|
|
declare void @llvm.assume(i1)
|
|
declare void @unknown(i8*, i8*, i8*, i8*)
|
|
declare void @use_i8_ptr(i8* nocapture readnone) nounwind
|
|
declare void @use_i8_ptr_ret(i8* nocapture readnone) nounwind willreturn
|
|
|
|
declare noalias i8* @malloc(i64)
|
|
|
|
attributes #0 = { nounwind uwtable noinline }
|
|
attributes #1 = { nounwind }
|
|
attributes #2 = { nobuiltin nounwind }
|