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llvm-project/llvm/test/Transforms/Attributor/dereferenceable-1.ll

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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --scrub-attributes
; RUN: opt -attributor -attributor-manifest-internal -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=12 -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_CGSCC_NPM,NOT_CGSCC_OPM,NOT_TUNIT_NPM,IS__TUNIT____,IS________OPM,IS__TUNIT_OPM
; RUN: opt -aa-pipeline=basic-aa -passes=attributor -attributor-manifest-internal -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=12 -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_CGSCC_OPM,NOT_CGSCC_NPM,NOT_TUNIT_OPM,IS__TUNIT____,IS________NPM,IS__TUNIT_NPM
; 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
; 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
; FIXME: Figure out why we need 16 iterations here.
declare void @deref_phi_user(i32* %a);
; TEST 1
; take mininimum of return values
;
define i32* @test1(i32* dereferenceable(4) %0, double* dereferenceable(8) %1, i1 zeroext %2) local_unnamed_addr {
; CHECK-LABEL: define {{[^@]+}}@test1
; CHECK-SAME: (i32* nofree nonnull readnone dereferenceable(4) "no-capture-maybe-returned" [[TMP0:%.*]], double* nofree nonnull readnone dereferenceable(8) "no-capture-maybe-returned" [[TMP1:%.*]], i1 zeroext [[TMP2:%.*]]) local_unnamed_addr
; CHECK-NEXT: [[TMP4:%.*]] = bitcast double* [[TMP1]] to i32*
; CHECK-NEXT: [[TMP5:%.*]] = select i1 [[TMP2]], i32* [[TMP0]], i32* [[TMP4]]
; CHECK-NEXT: ret i32* [[TMP5]]
;
%4 = bitcast double* %1 to i32*
%5 = select i1 %2, i32* %0, i32* %4
ret i32* %5
}
; TEST 2
define i32* @test2(i32* dereferenceable_or_null(4) %0, double* dereferenceable(8) %1, i1 zeroext %2) local_unnamed_addr {
; CHECK-LABEL: define {{[^@]+}}@test2
; CHECK-SAME: (i32* nofree readnone dereferenceable_or_null(4) "no-capture-maybe-returned" [[TMP0:%.*]], double* nofree nonnull readnone dereferenceable(8) "no-capture-maybe-returned" [[TMP1:%.*]], i1 zeroext [[TMP2:%.*]]) local_unnamed_addr
; CHECK-NEXT: [[TMP4:%.*]] = bitcast double* [[TMP1]] to i32*
; CHECK-NEXT: [[TMP5:%.*]] = select i1 [[TMP2]], i32* [[TMP0]], i32* [[TMP4]]
; CHECK-NEXT: ret i32* [[TMP5]]
;
%4 = bitcast double* %1 to i32*
%5 = select i1 %2, i32* %0, i32* %4
ret i32* %5
}
; TEST 3
; GEP inbounds
define i32* @test3_1(i32* dereferenceable(8) %0) local_unnamed_addr {
; CHECK-LABEL: define {{[^@]+}}@test3_1
; CHECK-SAME: (i32* nofree nonnull readnone dereferenceable(8) "no-capture-maybe-returned" [[TMP0:%.*]]) local_unnamed_addr
; CHECK-NEXT: [[RET:%.*]] = getelementptr inbounds i32, i32* [[TMP0]], i64 1
; CHECK-NEXT: ret i32* [[RET]]
;
%ret = getelementptr inbounds i32, i32* %0, i64 1
ret i32* %ret
}
define i32* @test3_2(i32* dereferenceable_or_null(32) %0) local_unnamed_addr {
; CHECK-LABEL: define {{[^@]+}}@test3_2
; CHECK-SAME: (i32* nofree readnone dereferenceable_or_null(32) "no-capture-maybe-returned" [[TMP0:%.*]]) local_unnamed_addr
; CHECK-NEXT: [[RET:%.*]] = getelementptr inbounds i32, i32* [[TMP0]], i64 4
; CHECK-NEXT: ret i32* [[RET]]
;
%ret = getelementptr inbounds i32, i32* %0, i64 4
ret i32* %ret
}
define i32* @test3_3(i32* dereferenceable(8) %0, i32* dereferenceable(16) %1, i1 %2) local_unnamed_addr {
; CHECK-LABEL: define {{[^@]+}}@test3_3
; CHECK-SAME: (i32* nofree nonnull readnone dereferenceable(8) "no-capture-maybe-returned" [[TMP0:%.*]], i32* nofree nonnull readnone dereferenceable(16) "no-capture-maybe-returned" [[TMP1:%.*]], i1 [[TMP2:%.*]]) local_unnamed_addr
; CHECK-NEXT: [[RET1:%.*]] = getelementptr inbounds i32, i32* [[TMP0]], i64 1
; CHECK-NEXT: [[RET2:%.*]] = getelementptr inbounds i32, i32* [[TMP1]], i64 2
; CHECK-NEXT: [[RET:%.*]] = select i1 [[TMP2]], i32* [[RET1]], i32* [[RET2]]
; CHECK-NEXT: ret i32* [[RET]]
;
%ret1 = getelementptr inbounds i32, i32* %0, i64 1
%ret2 = getelementptr inbounds i32, i32* %1, i64 2
%ret = select i1 %2, i32* %ret1, i32* %ret2
ret i32* %ret
}
; TEST 4
; Better than known in IR.
define dereferenceable(4) i32* @test4(i32* dereferenceable(8) %0) local_unnamed_addr {
; CHECK-LABEL: define {{[^@]+}}@test4
; CHECK-SAME: (i32* nofree nonnull readnone returned dereferenceable(8) "no-capture-maybe-returned" [[TMP0:%.*]]) local_unnamed_addr
; CHECK-NEXT: ret i32* [[TMP0]]
;
ret i32* %0
}
; TEST 5
; loop in which dereferenceabily "grows"
define void @deref_phi_growing(i32* dereferenceable(4000) %a) {
; CHECK-LABEL: define {{[^@]+}}@deref_phi_growing
; CHECK-SAME: (i32* nonnull dereferenceable(4000) [[A:%.*]])
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_COND:%.*]]
; CHECK: for.cond:
; CHECK-NEXT: [[I_0:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_INC:%.*]] ]
; CHECK-NEXT: [[A_ADDR_0:%.*]] = phi i32* [ [[A]], [[ENTRY]] ], [ [[INCDEC_PTR:%.*]], [[FOR_INC]] ]
; CHECK-NEXT: call void @deref_phi_user(i32* nonnull dereferenceable(4000) [[A_ADDR_0]])
; CHECK-NEXT: [[TMP:%.*]] = load i32, i32* [[A_ADDR_0]], align 4
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[I_0]], [[TMP]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY:%.*]], label [[FOR_COND_CLEANUP:%.*]]
; CHECK: for.cond.cleanup:
; CHECK-NEXT: br label [[FOR_END:%.*]]
; CHECK: for.body:
; CHECK-NEXT: br label [[FOR_INC]]
; CHECK: for.inc:
; CHECK-NEXT: [[INCDEC_PTR]] = getelementptr inbounds i32, i32* [[A_ADDR_0]], i64 -1
; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_0]], 1
; CHECK-NEXT: br label [[FOR_COND]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.cond
for.cond: ; preds = %for.inc, %entry
%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
%a.addr.0 = phi i32* [ %a, %entry ], [ %incdec.ptr, %for.inc ]
call void @deref_phi_user(i32* %a.addr.0)
%tmp = load i32, i32* %a.addr.0, align 4
%cmp = icmp slt i32 %i.0, %tmp
br i1 %cmp, label %for.body, label %for.cond.cleanup
for.cond.cleanup: ; preds = %for.cond
br label %for.end
for.body: ; preds = %for.cond
br label %for.inc
for.inc: ; preds = %for.body
%incdec.ptr = getelementptr inbounds i32, i32* %a.addr.0, i64 -1
%inc = add nuw nsw i32 %i.0, 1
br label %for.cond
for.end: ; preds = %for.cond.cleanup
ret void
}
; TEST 6
; loop in which dereferenceabily "shrinks"
define void @deref_phi_shrinking(i32* dereferenceable(4000) %a) {
; CHECK-LABEL: define {{[^@]+}}@deref_phi_shrinking
; CHECK-SAME: (i32* nonnull dereferenceable(4000) [[A:%.*]])
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_COND:%.*]]
; CHECK: for.cond:
; CHECK-NEXT: [[I_0:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_INC:%.*]] ]
; CHECK-NEXT: [[A_ADDR_0:%.*]] = phi i32* [ [[A]], [[ENTRY]] ], [ [[INCDEC_PTR:%.*]], [[FOR_INC]] ]
; CHECK-NEXT: call void @deref_phi_user(i32* nonnull [[A_ADDR_0]])
; CHECK-NEXT: [[TMP:%.*]] = load i32, i32* [[A_ADDR_0]], align 4
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[I_0]], [[TMP]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY:%.*]], label [[FOR_COND_CLEANUP:%.*]]
; CHECK: for.cond.cleanup:
; CHECK-NEXT: br label [[FOR_END:%.*]]
; CHECK: for.body:
; CHECK-NEXT: br label [[FOR_INC]]
; CHECK: for.inc:
; CHECK-NEXT: [[INCDEC_PTR]] = getelementptr inbounds i32, i32* [[A_ADDR_0]], i64 1
; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_0]], 1
; CHECK-NEXT: br label [[FOR_COND]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %for.cond
for.cond: ; preds = %for.inc, %entry
%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
%a.addr.0 = phi i32* [ %a, %entry ], [ %incdec.ptr, %for.inc ]
call void @deref_phi_user(i32* %a.addr.0)
%tmp = load i32, i32* %a.addr.0, align 4
%cmp = icmp slt i32 %i.0, %tmp
br i1 %cmp, label %for.body, label %for.cond.cleanup
for.cond.cleanup: ; preds = %for.cond
br label %for.end
for.body: ; preds = %for.cond
br label %for.inc
for.inc: ; preds = %for.body
%incdec.ptr = getelementptr inbounds i32, i32* %a.addr.0, i64 1
%inc = add nuw nsw i32 %i.0, 1
br label %for.cond
for.end: ; preds = %for.cond.cleanup
ret void
}
; TEST 7
; share known infomation in must-be-executed-context
declare i32* @unkown_ptr() willreturn nounwind
declare i32 @unkown_f(i32*) willreturn nounwind
define i32* @f7_0(i32* %ptr) {
; CHECK-LABEL: define {{[^@]+}}@f7_0
; CHECK-SAME: (i32* nonnull returned dereferenceable(8) [[PTR:%.*]])
; CHECK-NEXT: [[T:%.*]] = tail call i32 @unkown_f(i32* nonnull dereferenceable(8) [[PTR]])
; CHECK-NEXT: ret i32* [[PTR]]
;
%T = tail call i32 @unkown_f(i32* dereferenceable(8) %ptr)
ret i32* %ptr
}
define void @f7_1(i32* %ptr, i1 %c) {
; CHECK-LABEL: define {{[^@]+}}@f7_1
; CHECK-SAME: (i32* nonnull align 4 dereferenceable(4) [[PTR:%.*]], i1 [[C:%.*]])
; CHECK-NEXT: [[A:%.*]] = tail call i32 @unkown_f(i32* nonnull align 4 dereferenceable(4) [[PTR]])
; CHECK-NEXT: [[B:%.*]] = tail call i32 @unkown_f(i32* nonnull align 4 dereferenceable(4) [[PTR]])
; CHECK-NEXT: br i1 [[C]], label [[IF_TRUE:%.*]], label [[IF_FALSE:%.*]]
; CHECK: if.true:
; CHECK-NEXT: [[C:%.*]] = tail call i32 @unkown_f(i32* nonnull align 4 dereferenceable(8) [[PTR]])
; CHECK-NEXT: [[D:%.*]] = tail call i32 @unkown_f(i32* nonnull align 4 dereferenceable(8) [[PTR]])
; CHECK-NEXT: [[E:%.*]] = tail call i32 @unkown_f(i32* nonnull align 4 dereferenceable(8) [[PTR]])
; CHECK-NEXT: ret void
; CHECK: if.false:
; CHECK-NEXT: ret void
;
%A = tail call i32 @unkown_f(i32* %ptr)
%ptr.0 = load i32, i32* %ptr
; deref 4 hold
; FIXME: this should be %B = tail call i32 @unkown_f(i32* nonnull dereferenceable(4) %ptr)
%B = tail call i32 @unkown_f(i32* dereferenceable(1) %ptr)
br i1%c, label %if.true, label %if.false
if.true:
%C = tail call i32 @unkown_f(i32* %ptr)
%D = tail call i32 @unkown_f(i32* dereferenceable(8) %ptr)
%E = tail call i32 @unkown_f(i32* %ptr)
ret void
if.false:
ret void
}
define void @f7_2(i1 %c) {
; CHECK-LABEL: define {{[^@]+}}@f7_2
; CHECK-SAME: (i1 [[C:%.*]])
; CHECK-NEXT: [[PTR:%.*]] = tail call nonnull align 4 dereferenceable(4) i32* @unkown_ptr()
; CHECK-NEXT: [[A:%.*]] = tail call i32 @unkown_f(i32* nonnull align 4 dereferenceable(4) [[PTR]])
; CHECK-NEXT: [[B:%.*]] = tail call i32 @unkown_f(i32* nonnull align 4 dereferenceable(4) [[PTR]])
; CHECK-NEXT: br i1 [[C]], label [[IF_TRUE:%.*]], label [[IF_FALSE:%.*]]
; CHECK: if.true:
; CHECK-NEXT: [[C:%.*]] = tail call i32 @unkown_f(i32* nonnull align 4 dereferenceable(8) [[PTR]])
; CHECK-NEXT: [[D:%.*]] = tail call i32 @unkown_f(i32* nonnull align 4 dereferenceable(8) [[PTR]])
; CHECK-NEXT: [[E:%.*]] = tail call i32 @unkown_f(i32* nonnull align 4 dereferenceable(8) [[PTR]])
; CHECK-NEXT: ret void
; CHECK: if.false:
; CHECK-NEXT: ret void
;
%ptr = tail call i32* @unkown_ptr()
%A = tail call i32 @unkown_f(i32* %ptr)
%arg_a.0 = load i32, i32* %ptr
; deref 4 hold
%B = tail call i32 @unkown_f(i32* dereferenceable(1) %ptr)
br i1%c, label %if.true, label %if.false
if.true:
%C = tail call i32 @unkown_f(i32* %ptr)
%D = tail call i32 @unkown_f(i32* dereferenceable(8) %ptr)
%E = tail call i32 @unkown_f(i32* %ptr)
ret void
if.false:
ret void
}
define i32* @f7_3() {
; CHECK-LABEL: define {{[^@]+}}@f7_3()
; CHECK-NEXT: [[PTR:%.*]] = tail call nonnull align 16 dereferenceable(4) i32* @unkown_ptr()
; CHECK-NEXT: store i32 10, i32* [[PTR]], align 16
; CHECK-NEXT: ret i32* [[PTR]]
;
%ptr = tail call i32* @unkown_ptr()
store i32 10, i32* %ptr, align 16
ret i32* %ptr
}
; FIXME: This should have a return dereferenceable(8) but we need to make sure it will work in loops as well.
define i32* @test_for_minus_index(i32* %p) {
; CHECK-LABEL: define {{[^@]+}}@test_for_minus_index
; CHECK-SAME: (i32* nofree nonnull writeonly align 4 "no-capture-maybe-returned" [[P:%.*]])
; CHECK-NEXT: [[Q:%.*]] = getelementptr inbounds i32, i32* [[P]], i32 -2
; CHECK-NEXT: store i32 1, i32* [[Q]], align 4
; CHECK-NEXT: ret i32* [[Q]]
;
%q = getelementptr inbounds i32, i32* %p, i32 -2
store i32 1, i32* %q
ret i32* %q
}
define void @deref_or_null_and_nonnull(i32* dereferenceable_or_null(100) %0) {
; CHECK-LABEL: define {{[^@]+}}@deref_or_null_and_nonnull
; CHECK-SAME: (i32* nocapture nofree nonnull writeonly align 4 dereferenceable(100) [[TMP0:%.*]])
; CHECK-NEXT: store i32 1, i32* [[TMP0]], align 4
; CHECK-NEXT: ret void
;
store i32 1, i32* %0
ret void
}
; TEST 8
; Use Constant range in deereferenceable
; void g(int *p, long long int *range){
; int r = *range ; // [10, 99]
; fill_range(p, *range);
; }
; void fill_range(int* p, long long int start){
; for(long long int i = start;i<start+10;i++){
; // If p[i] is inbounds, p is dereferenceable(40) at least.
; p[i] = i;
; }
; }
; NOTE: %p should not be dereferenceable
define internal void @fill_range_not_inbounds(i32* %p, i64 %start){
; CHECK-LABEL: define {{[^@]+}}@fill_range_not_inbounds
; CHECK-SAME: (i32* nocapture nofree writeonly [[P:%.*]], i64 [[START:%.*]])
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = add nsw i64 [[START]], 9
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.cond.cleanup:
; CHECK-NEXT: ret void
; CHECK: for.body:
; CHECK-NEXT: [[I_06:%.*]] = phi i64 [ [[START]], [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT: [[CONV:%.*]] = trunc i64 [[I_06]] to i32
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr i32, i32* [[P]], i64 [[I_06]]
; CHECK-NEXT: store i32 [[CONV]], i32* [[ARRAYIDX]], align 4
; CHECK-NEXT: [[INC]] = add nsw i64 [[I_06]], 1
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i64 [[I_06]], [[TMP0]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_COND_CLEANUP:%.*]]
;
entry:
%0 = add nsw i64 %start, 9
br label %for.body
for.cond.cleanup: ; preds = %for.body
ret void
for.body: ; preds = %entry, %for.body
%i.06 = phi i64 [ %start, %entry ], [ %inc, %for.body ]
%conv = trunc i64 %i.06 to i32
%arrayidx = getelementptr i32, i32* %p, i64 %i.06
store i32 %conv, i32* %arrayidx, align 4
%inc = add nsw i64 %i.06, 1
%cmp = icmp slt i64 %i.06, %0
br i1 %cmp, label %for.body, label %for.cond.cleanup
}
; FIXME: %p should be dereferenceable(40)
define internal void @fill_range_inbounds(i32* %p, i64 %start){
; CHECK-LABEL: define {{[^@]+}}@fill_range_inbounds
; CHECK-SAME: (i32* nocapture nofree writeonly [[P:%.*]], i64 [[START:%.*]])
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = add nsw i64 [[START]], 9
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.cond.cleanup:
; CHECK-NEXT: ret void
; CHECK: for.body:
; CHECK-NEXT: [[I_06:%.*]] = phi i64 [ [[START]], [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT: [[CONV:%.*]] = trunc i64 [[I_06]] to i32
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[P]], i64 [[I_06]]
; CHECK-NEXT: store i32 [[CONV]], i32* [[ARRAYIDX]], align 4
; CHECK-NEXT: [[INC]] = add nsw i64 [[I_06]], 1
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i64 [[I_06]], [[TMP0]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_COND_CLEANUP:%.*]]
;
entry:
%0 = add nsw i64 %start, 9
br label %for.body
for.cond.cleanup: ; preds = %for.body
ret void
for.body: ; preds = %entry, %for.body
%i.06 = phi i64 [ %start, %entry ], [ %inc, %for.body ]
%conv = trunc i64 %i.06 to i32
%arrayidx = getelementptr inbounds i32, i32* %p, i64 %i.06
store i32 %conv, i32* %arrayidx, align 4
%inc = add nsw i64 %i.06, 1
%cmp = icmp slt i64 %i.06, %0
br i1 %cmp, label %for.body, label %for.cond.cleanup
}
define void @call_fill_range(i32* nocapture %p, i64* nocapture readonly %range) {
; CHECK-LABEL: define {{[^@]+}}@call_fill_range
; CHECK-SAME: (i32* nocapture nofree writeonly [[P:%.*]], i64* nocapture nofree nonnull readonly align 8 dereferenceable(8) [[RANGE:%.*]])
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = load i64, i64* [[RANGE]], align 8, !range !0
; CHECK-NEXT: tail call void @fill_range_inbounds(i32* nocapture nofree writeonly [[P]], i64 [[TMP0]])
; CHECK-NEXT: tail call void @fill_range_not_inbounds(i32* nocapture nofree writeonly [[P]], i64 [[TMP0]])
; CHECK-NEXT: ret void
;
entry:
%0 = load i64, i64* %range, align 8, !range !0
tail call void @fill_range_inbounds(i32* %p, i64 %0)
tail call void @fill_range_not_inbounds(i32* %p, i64 %0)
ret void
}
declare void @use0() willreturn nounwind
declare void @use1(i8*) willreturn nounwind
declare void @use2(i8*, i8*) willreturn nounwind
declare void @use3(i8*, i8*, i8*) willreturn nounwind
; simple path test
; if(..)
; fun2(dereferenceable(8) %a, dereferenceable(8) %b)
; else
; fun2(dereferenceable(4) %a, %b)
; We can say that %a is dereferenceable(4) but %b is not.
define void @simple-path(i8* %a, i8 * %b, i8 %c) {
; CHECK-LABEL: define {{[^@]+}}@simple-path
; CHECK-SAME: (i8* nonnull dereferenceable(4) [[A:%.*]], i8* [[B:%.*]], i8 [[C:%.*]])
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8 [[C]], 0
; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
; CHECK: if.then:
; CHECK-NEXT: tail call void @use2(i8* nonnull dereferenceable(8) [[A]], i8* nonnull dereferenceable(8) [[B]])
; CHECK-NEXT: ret void
; CHECK: if.else:
; CHECK-NEXT: tail call void @use2(i8* nonnull dereferenceable(4) [[A]], i8* [[B]])
; CHECK-NEXT: ret void
;
%cmp = icmp eq i8 %c, 0
br i1 %cmp, label %if.then, label %if.else
if.then:
tail call void @use2(i8* dereferenceable(8) %a, i8* dereferenceable(8) %b)
ret void
if.else:
tail call void @use2(i8* dereferenceable(4) %a, i8* %b)
ret void
}
; More complex test
; {
; fun1(dereferenceable(4) %a)
; if(..)
; ... (willreturn & nounwind)
; fun1(dereferenceable(12) %a)
; else
; ... (willreturn & nounwind)
; fun1(dereferenceable(16) %a)
; fun1(dereferenceable(8) %a)
; }
; %a is dereferenceable(12)
define void @complex-path(i8* %a, i8* %b, i8 %c) {
; CHECK-LABEL: define {{[^@]+}}@complex-path
; CHECK-SAME: (i8* nonnull dereferenceable(12) [[A:%.*]], i8* nocapture nofree readnone [[B:%.*]], i8 [[C:%.*]])
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8 [[C]], 0
; CHECK-NEXT: tail call void @use1(i8* nonnull dereferenceable(12) [[A]])
; CHECK-NEXT: br i1 [[CMP]], label [[CONT_THEN:%.*]], label [[CONT_ELSE:%.*]]
; CHECK: cont.then:
; CHECK-NEXT: tail call void @use1(i8* nonnull dereferenceable(12) [[A]])
; CHECK-NEXT: br label [[CONT2:%.*]]
; CHECK: cont.else:
; CHECK-NEXT: tail call void @use1(i8* nonnull dereferenceable(16) [[A]])
; CHECK-NEXT: br label [[CONT2]]
; CHECK: cont2:
; CHECK-NEXT: tail call void @use1(i8* nonnull dereferenceable(12) [[A]])
; CHECK-NEXT: ret void
;
%cmp = icmp eq i8 %c, 0
tail call void @use1(i8* dereferenceable(4) %a)
br i1 %cmp, label %cont.then, label %cont.else
cont.then:
tail call void @use1(i8* dereferenceable(12) %a)
br label %cont2
cont.else:
tail call void @use1(i8* dereferenceable(16) %a)
br label %cont2
cont2:
tail call void @use1(i8* dereferenceable(8) %a)
ret void
}
; void rec-branch-1(int a, int b, int c, int *ptr) {
; if (a) {
; if (b)
; *ptr = 1;
; else
; *ptr = 2;
; } else {
; if (c)
; *ptr = 3;
; else
; *ptr = 4;
; }
; }
;
; FIXME: %ptr should be dereferenceable(4)
define dso_local void @rec-branch-1(i32 %a, i32 %b, i32 %c, i32* %ptr) {
; CHECK-LABEL: define {{[^@]+}}@rec-branch-1
; CHECK-SAME: (i32 [[A:%.*]], i32 [[B:%.*]], i32 [[C:%.*]], i32* nocapture nofree writeonly [[PTR:%.*]])
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[A]], 0
; CHECK-NEXT: br i1 [[TOBOOL]], label [[IF_ELSE3:%.*]], label [[IF_THEN:%.*]]
; CHECK: if.then:
; CHECK-NEXT: [[TOBOOL1:%.*]] = icmp eq i32 [[B]], 0
; CHECK-NEXT: br i1 [[TOBOOL1]], label [[IF_ELSE:%.*]], label [[IF_THEN2:%.*]]
; CHECK: if.then2:
; CHECK-NEXT: store i32 1, i32* [[PTR]], align 4
; CHECK-NEXT: br label [[IF_END8:%.*]]
; CHECK: if.else:
; CHECK-NEXT: store i32 2, i32* [[PTR]], align 4
; CHECK-NEXT: br label [[IF_END8]]
; CHECK: if.else3:
; CHECK-NEXT: [[TOBOOL4:%.*]] = icmp eq i32 [[C]], 0
; CHECK-NEXT: br i1 [[TOBOOL4]], label [[IF_ELSE6:%.*]], label [[IF_THEN5:%.*]]
; CHECK: if.then5:
; CHECK-NEXT: store i32 3, i32* [[PTR]], align 4
; CHECK-NEXT: br label [[IF_END8]]
; CHECK: if.else6:
; CHECK-NEXT: store i32 4, i32* [[PTR]], align 4
; CHECK-NEXT: br label [[IF_END8]]
; CHECK: if.end8:
; CHECK-NEXT: ret void
;
entry:
%tobool = icmp eq i32 %a, 0
br i1 %tobool, label %if.else3, label %if.then
if.then: ; preds = %entry
%tobool1 = icmp eq i32 %b, 0
br i1 %tobool1, label %if.else, label %if.then2
if.then2: ; preds = %if.then
store i32 1, i32* %ptr, align 4
br label %if.end8
if.else: ; preds = %if.then
store i32 2, i32* %ptr, align 4
br label %if.end8
if.else3: ; preds = %entry
%tobool4 = icmp eq i32 %c, 0
br i1 %tobool4, label %if.else6, label %if.then5
if.then5: ; preds = %if.else3
store i32 3, i32* %ptr, align 4
br label %if.end8
if.else6: ; preds = %if.else3
store i32 4, i32* %ptr, align 4
br label %if.end8
if.end8: ; preds = %if.then5, %if.else6, %if.then2, %if.else
ret void
}
; void rec-branch-2(int a, int b, int c, int *ptr) {
; if (a) {
; if (b)
; *ptr = 1;
; else
; *ptr = 2;
; } else {
; if (c)
; *ptr = 3;
; else
; rec-branch-2(1, 1, 1, ptr);
; }
; }
; FIXME: %ptr should be dereferenceable(4)
define dso_local void @rec-branch-2(i32 %a, i32 %b, i32 %c, i32* %ptr) {
; CHECK-LABEL: define {{[^@]+}}@rec-branch-2
; CHECK-SAME: (i32 [[A:%.*]], i32 [[B:%.*]], i32 [[C:%.*]], i32* nocapture nofree writeonly [[PTR:%.*]])
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[A]], 0
; CHECK-NEXT: br i1 [[TOBOOL]], label [[IF_ELSE3:%.*]], label [[IF_THEN:%.*]]
; CHECK: if.then:
; CHECK-NEXT: [[TOBOOL1:%.*]] = icmp eq i32 [[B]], 0
; CHECK-NEXT: br i1 [[TOBOOL1]], label [[IF_ELSE:%.*]], label [[IF_THEN2:%.*]]
; CHECK: if.then2:
; CHECK-NEXT: store i32 1, i32* [[PTR]], align 4
; CHECK-NEXT: br label [[IF_END8:%.*]]
; CHECK: if.else:
; CHECK-NEXT: store i32 2, i32* [[PTR]], align 4
; CHECK-NEXT: br label [[IF_END8]]
; CHECK: if.else3:
; CHECK-NEXT: [[TOBOOL4:%.*]] = icmp eq i32 [[C]], 0
; CHECK-NEXT: br i1 [[TOBOOL4]], label [[IF_ELSE6:%.*]], label [[IF_THEN5:%.*]]
; CHECK: if.then5:
; CHECK-NEXT: store i32 3, i32* [[PTR]], align 4
; CHECK-NEXT: br label [[IF_END8]]
; CHECK: if.else6:
; CHECK-NEXT: tail call void @rec-branch-2(i32 1, i32 1, i32 1, i32* nocapture nofree writeonly [[PTR]])
; CHECK-NEXT: br label [[IF_END8]]
; CHECK: if.end8:
; CHECK-NEXT: ret void
;
entry:
%tobool = icmp eq i32 %a, 0
br i1 %tobool, label %if.else3, label %if.then
if.then: ; preds = %entry
%tobool1 = icmp eq i32 %b, 0
br i1 %tobool1, label %if.else, label %if.then2
if.then2: ; preds = %if.then
store i32 1, i32* %ptr, align 4
br label %if.end8
if.else: ; preds = %if.then
store i32 2, i32* %ptr, align 4
br label %if.end8
if.else3: ; preds = %entry
%tobool4 = icmp eq i32 %c, 0
br i1 %tobool4, label %if.else6, label %if.then5
if.then5: ; preds = %if.else3
store i32 3, i32* %ptr, align 4
br label %if.end8
if.else6: ; preds = %if.else3
tail call void @rec-branch-2(i32 1, i32 1, i32 1, i32* %ptr)
br label %if.end8
if.end8: ; preds = %if.then5, %if.else6, %if.then2, %if.else
ret void
}
declare void @unknown()
define void @nonnull_assume_pos(i8* %arg1, i8* %arg2, i8* %arg3, i8* %arg4) {
; ATTRIBUTOR-LABEL: define {{[^@]+}}@nonnull_assume_pos
; ATTRIBUTOR-SAME: (i8* nocapture nofree nonnull readnone dereferenceable(101) [[ARG1:%.*]], i8* nocapture nofree readnone dereferenceable_or_null(31) [[ARG2:%.*]], i8* nocapture nofree nonnull readnone [[ARG3:%.*]], i8* nocapture nofree readnone dereferenceable_or_null(42) [[ARG4:%.*]])
; ATTRIBUTOR-NEXT: call void @llvm.assume(i1 true) #6 [ "nonnull"(i8* undef), "dereferenceable"(i8* undef, i64 1), "dereferenceable"(i8* undef, i64 2), "dereferenceable"(i8* undef, i64 101), "dereferenceable_or_null"(i8* undef, i64 31), "dereferenceable_or_null"(i8* undef, i64 42) ]
; ATTRIBUTOR-NEXT: call void @unknown()
; ATTRIBUTOR-NEXT: ret void
;
; IS__TUNIT_OPM-LABEL: define {{[^@]+}}@nonnull_assume_pos
; IS__TUNIT_OPM-SAME: (i8* nocapture nofree nonnull readnone dereferenceable(101) [[ARG1:%.*]], i8* nocapture nofree readnone dereferenceable_or_null(31) [[ARG2:%.*]], i8* nocapture nofree nonnull readnone [[ARG3:%.*]], i8* nocapture nofree readnone dereferenceable_or_null(42) [[ARG4:%.*]])
; IS__TUNIT_OPM-NEXT: call void @llvm.assume(i1 true) #6 [ "nonnull"(i8* [[ARG3]]), "dereferenceable"(i8* [[ARG1]], i64 1), "dereferenceable"(i8* [[ARG1]], i64 2), "dereferenceable"(i8* [[ARG1]], i64 101), "dereferenceable_or_null"(i8* [[ARG2]], i64 31), "dereferenceable_or_null"(i8* [[ARG4]], i64 42) ]
; IS__TUNIT_OPM-NEXT: call void @unknown()
; IS__TUNIT_OPM-NEXT: ret void
;
; IS________NPM-LABEL: define {{[^@]+}}@nonnull_assume_pos
; IS________NPM-SAME: (i8* nocapture nofree nonnull readnone dereferenceable(101) [[ARG1:%.*]], i8* nocapture nofree readnone dereferenceable_or_null(31) [[ARG2:%.*]], i8* nocapture nofree nonnull readnone [[ARG3:%.*]], i8* nocapture nofree readnone dereferenceable_or_null(42) [[ARG4:%.*]])
; IS________NPM-NEXT: call void @llvm.assume(i1 true) #7 [ "nonnull"(i8* [[ARG3]]), "dereferenceable"(i8* [[ARG1]], i64 1), "dereferenceable"(i8* [[ARG1]], i64 2), "dereferenceable"(i8* [[ARG1]], i64 101), "dereferenceable_or_null"(i8* [[ARG2]], i64 31), "dereferenceable_or_null"(i8* [[ARG4]], i64 42) ]
; IS________NPM-NEXT: call void @unknown()
; IS________NPM-NEXT: ret void
;
; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@nonnull_assume_pos
; IS__CGSCC_OPM-SAME: (i8* nocapture nofree nonnull readnone dereferenceable(101) [[ARG1:%.*]], i8* nocapture nofree readnone dereferenceable_or_null(31) [[ARG2:%.*]], i8* nocapture nofree nonnull readnone [[ARG3:%.*]], i8* nocapture nofree readnone dereferenceable_or_null(42) [[ARG4:%.*]])
; IS__CGSCC_OPM-NEXT: call void @llvm.assume(i1 true) #8 [ "nonnull"(i8* [[ARG3]]), "dereferenceable"(i8* [[ARG1]], i64 1), "dereferenceable"(i8* [[ARG1]], i64 2), "dereferenceable"(i8* [[ARG1]], i64 101), "dereferenceable_or_null"(i8* [[ARG2]], i64 31), "dereferenceable_or_null"(i8* [[ARG4]], i64 42) ]
; IS__CGSCC_OPM-NEXT: call void @unknown()
; IS__CGSCC_OPM-NEXT: ret void
;
call void @llvm.assume(i1 true) [ "nonnull"(i8* %arg3), "dereferenceable"(i8* %arg1, i64 1), "dereferenceable"(i8* %arg1, i64 2), "dereferenceable"(i8* %arg1, i64 101), "dereferenceable_or_null"(i8* %arg2, i64 31), "dereferenceable_or_null"(i8* %arg4, i64 42)]
call void @unknown()
ret void
}
define void @nonnull_assume_neg(i8* %arg1, i8* %arg2, i8* %arg3) {
; ATTRIBUTOR-LABEL: define {{[^@]+}}@nonnull_assume_neg
; ATTRIBUTOR-SAME: (i8* nocapture nofree readnone [[ARG1:%.*]], i8* nocapture nofree readnone [[ARG2:%.*]], i8* nocapture nofree readnone [[ARG3:%.*]])
; ATTRIBUTOR-NEXT: call void @unknown()
; ATTRIBUTOR-NEXT: call void @llvm.assume(i1 true) [ "dereferenceable"(i8* undef, i64 101), "dereferenceable"(i8* undef, i64 -2), "dereferenceable_or_null"(i8* undef, i64 31) ]
; ATTRIBUTOR-NEXT: ret void
;
; CHECK-LABEL: define {{[^@]+}}@nonnull_assume_neg
; CHECK-SAME: (i8* nocapture nofree readnone [[ARG1:%.*]], i8* nocapture nofree readnone [[ARG2:%.*]], i8* nocapture nofree readnone [[ARG3:%.*]])
; CHECK-NEXT: call void @unknown()
; CHECK-NEXT: call void @llvm.assume(i1 true) [ "dereferenceable"(i8* [[ARG1]], i64 101), "dereferenceable"(i8* [[ARG2]], i64 -2), "dereferenceable_or_null"(i8* [[ARG3]], i64 31) ]
; CHECK-NEXT: ret void
;
call void @unknown()
call void @llvm.assume(i1 true) ["dereferenceable"(i8* %arg1, i64 101), "dereferenceable"(i8* %arg2, i64 -2), "dereferenceable_or_null"(i8* %arg3, i64 31)]
ret void
}
define void @nonnull_assume_call(i8* %arg1, i8* %arg2, i8* %arg3, i8* %arg4) {
; ATTRIBUTOR-LABEL: define {{[^@]+}}@nonnull_assume_call
; ATTRIBUTOR-SAME: (i8* [[ARG1:%.*]], i8* [[ARG2:%.*]], i8* [[ARG3:%.*]], i8* [[ARG4:%.*]])
; ATTRIBUTOR-NEXT: call void @unknown()
; ATTRIBUTOR-NEXT: [[P:%.*]] = call nonnull dereferenceable(101) i32* @unkown_ptr()
; ATTRIBUTOR-NEXT: call void @unknown_use32(i32* nonnull dereferenceable(101) [[P]])
; ATTRIBUTOR-NEXT: call void @unknown_use8(i8* nonnull dereferenceable(42) [[ARG4]])
; ATTRIBUTOR-NEXT: call void @unknown_use8(i8* nonnull [[ARG3]])
; ATTRIBUTOR-NEXT: call void @unknown_use8(i8* nonnull dereferenceable(31) [[ARG2]])
; ATTRIBUTOR-NEXT: call void @unknown_use8(i8* nonnull dereferenceable(2) [[ARG1]])
; ATTRIBUTOR-NEXT: call void @llvm.assume(i1 true) [ "nonnull"(i8* [[ARG3]]), "dereferenceable"(i8* [[ARG1]], i64 1), "dereferenceable"(i8* [[ARG1]], i64 2), "dereferenceable"(i32* [[P]], i64 101), "dereferenceable_or_null"(i8* [[ARG2]], i64 31), "dereferenceable_or_null"(i8* [[ARG4]], i64 42) ]
; ATTRIBUTOR-NEXT: call void @unknown_use8(i8* nonnull dereferenceable(2) [[ARG1]])
; ATTRIBUTOR-NEXT: call void @unknown_use8(i8* nonnull dereferenceable(31) [[ARG2]])
; ATTRIBUTOR-NEXT: call void @unknown_use8(i8* nonnull [[ARG3]])
; ATTRIBUTOR-NEXT: call void @unknown_use8(i8* nonnull dereferenceable(42) [[ARG4]])
; ATTRIBUTOR-NEXT: call void @unknown_use32(i32* nonnull dereferenceable(101) [[P]])
; ATTRIBUTOR-NEXT: call void @unknown()
; 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()
; CHECK-NEXT: [[P:%.*]] = call nonnull dereferenceable(101) i32* @unkown_ptr()
; CHECK-NEXT: call void @unknown_use32(i32* nonnull dereferenceable(101) [[P]])
; CHECK-NEXT: call void @unknown_use8(i8* nonnull dereferenceable(42) [[ARG4]])
; CHECK-NEXT: call void @unknown_use8(i8* nonnull [[ARG3]])
; CHECK-NEXT: call void @unknown_use8(i8* nonnull dereferenceable(31) [[ARG2]])
; CHECK-NEXT: call void @unknown_use8(i8* nonnull dereferenceable(2) [[ARG1]])
; CHECK-NEXT: call void @llvm.assume(i1 true) [ "nonnull"(i8* [[ARG3]]), "dereferenceable"(i8* [[ARG1]], i64 1), "dereferenceable"(i8* [[ARG1]], i64 2), "dereferenceable"(i32* [[P]], i64 101), "dereferenceable_or_null"(i8* [[ARG2]], i64 31), "dereferenceable_or_null"(i8* [[ARG4]], i64 42) ]
; CHECK-NEXT: call void @unknown_use8(i8* nonnull dereferenceable(2) [[ARG1]])
; CHECK-NEXT: call void @unknown_use8(i8* nonnull dereferenceable(31) [[ARG2]])
; CHECK-NEXT: call void @unknown_use8(i8* nonnull [[ARG3]])
; CHECK-NEXT: call void @unknown_use8(i8* nonnull dereferenceable(42) [[ARG4]])
; CHECK-NEXT: call void @unknown_use32(i32* nonnull dereferenceable(101) [[P]])
; CHECK-NEXT: call void @unknown()
; CHECK-NEXT: ret void
;
call void @unknown()
%p = call i32* @unkown_ptr()
call void @unknown_use32(i32* %p)
call void @unknown_use8(i8* %arg4)
call void @unknown_use8(i8* %arg3)
call void @unknown_use8(i8* %arg2)
call void @unknown_use8(i8* %arg1)
call void @llvm.assume(i1 true) [ "nonnull"(i8* %arg3), "dereferenceable"(i8* %arg1, i64 1), "dereferenceable"(i8* %arg1, i64 2), "dereferenceable"(i32* %p, i64 101), "dereferenceable_or_null"(i8* %arg2, i64 31), "dereferenceable_or_null"(i8* %arg4, i64 42)]
call void @unknown_use8(i8* %arg1)
call void @unknown_use8(i8* %arg2)
call void @unknown_use8(i8* %arg3)
call void @unknown_use8(i8* %arg4)
call void @unknown_use32(i32* %p)
call void @unknown()
ret void
}
declare void @unknown_use8(i8*) willreturn nounwind
declare void @unknown_use32(i32*) willreturn nounwind
declare void @llvm.assume(i1)
!0 = !{i64 10, i64 100}
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