; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --check-attributes --check-globals
; 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
; 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
; 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
; 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
; Determine dereference-ability before unused loads get deleted:
; https://bugs.llvm.org/show_bug.cgi?id=21780
define <4 x double> @PR21780(double* %ptr) {
; CHECK: Function Attrs: argmemonly nofree norecurse nosync nounwind readonly willreturn
; CHECK-LABEL: define {{[^@]+}}@PR21780
; CHECK-SAME: (double* nocapture nofree noundef nonnull readonly align 8 dereferenceable(32) [[PTR:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-NEXT: [[ARRAYIDX1:%.*]] = getelementptr inbounds double, double* [[PTR]], i64 1
; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds double, double* [[PTR]], i64 2
; CHECK-NEXT: [[ARRAYIDX3:%.*]] = getelementptr inbounds double, double* [[PTR]], i64 3
; CHECK-NEXT: [[T0:%.*]] = load double, double* [[PTR]], align 8
; CHECK-NEXT: [[T1:%.*]] = load double, double* [[ARRAYIDX1]], align 8
; CHECK-NEXT: [[T2:%.*]] = load double, double* [[ARRAYIDX2]], align 8
; CHECK-NEXT: [[T3:%.*]] = load double, double* [[ARRAYIDX3]], align 8
; CHECK-NEXT: [[VECINIT0:%.*]] = insertelement <4 x double> undef, double [[T0]], i32 0
; CHECK-NEXT: [[VECINIT1:%.*]] = insertelement <4 x double> [[VECINIT0]], double [[T1]], i32 1
; CHECK-NEXT: [[VECINIT2:%.*]] = insertelement <4 x double> [[VECINIT1]], double [[T2]], i32 2
; CHECK-NEXT: [[VECINIT3:%.*]] = insertelement <4 x double> [[VECINIT2]], double [[T3]], i32 3
; CHECK-NEXT: [[SHUFFLE:%.*]] = shufflevector <4 x double> [[VECINIT3]], <4 x double> [[VECINIT3]], <4 x i32> <i32 0, i32 0, i32 2, i32 2>
; CHECK-NEXT: ret <4 x double> [[SHUFFLE]]
;
; GEP of index 0 is simplified away.
%arrayidx1 = getelementptr inbounds double, double* %ptr, i64 1
%arrayidx2 = getelementptr inbounds double, double* %ptr, i64 2
%arrayidx3 = getelementptr inbounds double, double* %ptr, i64 3
%t0 = load double, double* %ptr, align 8
%t1 = load double, double* %arrayidx1, align 8
%t2 = load double, double* %arrayidx2, align 8
%t3 = load double, double* %arrayidx3, align 8
%vecinit0 = insertelement <4 x double> undef, double %t0, i32 0
%vecinit1 = insertelement <4 x double> %vecinit0, double %t1, i32 1
%vecinit2 = insertelement <4 x double> %vecinit1, double %t2, i32 2
%vecinit3 = insertelement <4 x double> %vecinit2, double %t3, i32 3
%shuffle = shufflevector <4 x double> %vecinit3, <4 x double> %vecinit3, <4 x i32> <i32 0, i32 0, i32 2, i32 2>
ret <4 x double> %shuffle
}
define double @PR21780_only_access3_with_inbounds(double* %ptr) {
; CHECK: Function Attrs: argmemonly nofree norecurse nosync nounwind readonly willreturn
; CHECK-LABEL: define {{[^@]+}}@PR21780_only_access3_with_inbounds
; CHECK-SAME: (double* nocapture nofree nonnull readonly align 8 dereferenceable(32) [[PTR:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: [[ARRAYIDX3:%.*]] = getelementptr inbounds double, double* [[PTR]], i64 3
; CHECK-NEXT: [[T3:%.*]] = load double, double* [[ARRAYIDX3]], align 8
; CHECK-NEXT: ret double [[T3]]
;
%arrayidx3 = getelementptr inbounds double, double* %ptr, i64 3
%t3 = load double, double* %arrayidx3, align 8
ret double %t3
}
define double @PR21780_only_access3_without_inbounds(double* %ptr) {
; CHECK: Function Attrs: argmemonly nofree norecurse nosync nounwind readonly willreturn
; CHECK-LABEL: define {{[^@]+}}@PR21780_only_access3_without_inbounds
; CHECK-SAME: (double* nocapture nofree readonly align 8 [[PTR:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: [[ARRAYIDX3:%.*]] = getelementptr double, double* [[PTR]], i64 3
; CHECK-NEXT: [[T3:%.*]] = load double, double* [[ARRAYIDX3]], align 8
; CHECK-NEXT: ret double [[T3]]
;
%arrayidx3 = getelementptr double, double* %ptr, i64 3
%t3 = load double, double* %arrayidx3, align 8
ret double %t3
}
define double @PR21780_without_inbounds(double* %ptr) {
; CHECK: Function Attrs: argmemonly nofree norecurse nosync nounwind readonly willreturn
; CHECK-LABEL: define {{[^@]+}}@PR21780_without_inbounds
; CHECK-SAME: (double* nocapture nofree noundef nonnull readonly align 8 dereferenceable(32) [[PTR:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: [[ARRAYIDX3:%.*]] = getelementptr double, double* [[PTR]], i64 3
; CHECK-NEXT: [[T3:%.*]] = load double, double* [[ARRAYIDX3]], align 8
; CHECK-NEXT: ret double [[T3]]
;
%arrayidx1 = getelementptr double, double* %ptr, i64 1
%arrayidx2 = getelementptr double, double* %ptr, i64 2
%arrayidx3 = getelementptr double, double* %ptr, i64 3
%t0 = load double, double* %ptr, align 8
%t1 = load double, double* %arrayidx1, align 8
%t2 = load double, double* %arrayidx2, align 8
%t3 = load double, double* %arrayidx3, align 8
ret double %t3
}
; Unsimplified, but still valid. Also, throw in some bogus arguments.
define void @gep0(i8* %unused, i8* %other, i8* %ptr) {
; CHECK: Function Attrs: argmemonly nofree norecurse nosync nounwind willreturn
; CHECK-LABEL: define {{[^@]+}}@gep0
; CHECK-SAME: (i8* nocapture nofree readnone [[UNUSED:%.*]], i8* nocapture nofree noundef nonnull writeonly dereferenceable(1) [[OTHER:%.*]], i8* nocapture nofree nonnull readonly dereferenceable(3) [[PTR:%.*]]) #[[ATTR1:[0-9]+]] {
; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr i8, i8* [[PTR]], i64 2
; CHECK-NEXT: [[T2:%.*]] = load i8, i8* [[ARRAYIDX2]], align 1
; CHECK-NEXT: store i8 [[T2]], i8* [[OTHER]], align 1
; CHECK-NEXT: ret void
;
%arrayidx0 = getelementptr i8, i8* %ptr, i64 0
%arrayidx1 = getelementptr i8, i8* %ptr, i64 1
%arrayidx2 = getelementptr i8, i8* %ptr, i64 2
%t0 = load i8, i8* %arrayidx0
%t1 = load i8, i8* %arrayidx1
%t2 = load i8, i8* %arrayidx2
store i8 %t2, i8* %other
ret void
}
; Order of accesses does not change computation.
; Multiple arguments may be dereferenceable.
define void @ordering(i8* %ptr1, i32* %ptr2) {
; CHECK: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
; CHECK-LABEL: define {{[^@]+}}@ordering
; CHECK-SAME: (i8* nocapture nofree nonnull readnone dereferenceable(3) [[PTR1:%.*]], i32* nocapture nofree nonnull readnone align 4 dereferenceable(8) [[PTR2:%.*]]) #[[ATTR2:[0-9]+]] {
; CHECK-NEXT: ret void
;
%a20 = getelementptr i32, i32* %ptr2, i64 0
%a12 = getelementptr i8, i8* %ptr1, i64 2
%t12 = load i8, i8* %a12
%a11 = getelementptr i8, i8* %ptr1, i64 1
%t20 = load i32, i32* %a20
%a10 = getelementptr i8, i8* %ptr1, i64 0
%t10 = load i8, i8* %a10
%t11 = load i8, i8* %a11
%a21 = getelementptr i32, i32* %ptr2, i64 1
%t21 = load i32, i32* %a21
ret void
}
; Not in entry block.
define void @not_entry_but_guaranteed_to_execute(i8* %ptr) {
; CHECK: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
; CHECK-LABEL: define {{[^@]+}}@not_entry_but_guaranteed_to_execute
; CHECK-SAME: (i8* nocapture nofree nonnull readnone dereferenceable(3) [[PTR:%.*]]) #[[ATTR2]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
br label %exit
exit:
%arrayidx0 = getelementptr i8, i8* %ptr, i64 0
%arrayidx1 = getelementptr i8, i8* %ptr, i64 1
%arrayidx2 = getelementptr i8, i8* %ptr, i64 2
%t0 = load i8, i8* %arrayidx0
%t1 = load i8, i8* %arrayidx1
%t2 = load i8, i8* %arrayidx2
ret void
}
; Not in entry block and not guaranteed to execute.
define void @not_entry_not_guaranteed_to_execute(i8* %ptr, i1 %cond) {
; CHECK: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
; CHECK-LABEL: define {{[^@]+}}@not_entry_not_guaranteed_to_execute
; CHECK-SAME: (i8* nocapture nofree readnone [[PTR:%.*]], i1 [[COND:%.*]]) #[[ATTR2]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[COND]], label [[LOADS:%.*]], label [[EXIT:%.*]]
; CHECK: loads:
; CHECK-NEXT: ret void
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
br i1 %cond, label %loads, label %exit
loads:
%arrayidx0 = getelementptr i8, i8* %ptr, i64 0
%arrayidx1 = getelementptr i8, i8* %ptr, i64 1
%arrayidx2 = getelementptr i8, i8* %ptr, i64 2
%t0 = load i8, i8* %arrayidx0
%t1 = load i8, i8* %arrayidx1
%t2 = load i8, i8* %arrayidx2
ret void
exit:
ret void
}
; The last load may not execute, so derefenceable bytes only covers the 1st two loads.
define void @partial_in_entry(i16* %ptr, i1 %cond) {
; CHECK: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
; CHECK-LABEL: define {{[^@]+}}@partial_in_entry
; CHECK-SAME: (i16* nocapture nofree nonnull readnone align 2 dereferenceable(4) [[PTR:%.*]], i1 [[COND:%.*]]) #[[ATTR2]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[COND]], label [[LOADS:%.*]], label [[EXIT:%.*]]
; CHECK: loads:
; CHECK-NEXT: ret void
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
%arrayidx0 = getelementptr i16, i16* %ptr, i64 0
%arrayidx1 = getelementptr i16, i16* %ptr, i64 1
%arrayidx2 = getelementptr i16, i16* %ptr, i64 2
%t0 = load i16, i16* %arrayidx0
%t1 = load i16, i16* %arrayidx1
br i1 %cond, label %loads, label %exit
loads:
%t2 = load i16, i16* %arrayidx2
ret void
exit:
ret void
}
; The volatile load can't be used to prove a non-volatile access is allowed.
; The 2nd and 3rd loads may never execute.
define void @volatile_is_not_dereferenceable(i16* %ptr) {
; CHECK: Function Attrs: argmemonly nofree norecurse nounwind willreturn
; CHECK-LABEL: define {{[^@]+}}@volatile_is_not_dereferenceable
; CHECK-SAME: (i16* nofree align 2 [[PTR:%.*]]) #[[ATTR3:[0-9]+]] {
; CHECK-NEXT: [[T0:%.*]] = load volatile i16, i16* [[PTR]], align 2
; CHECK-NEXT: ret void
;
%arrayidx0 = getelementptr i16, i16* %ptr, i64 0
%arrayidx1 = getelementptr i16, i16* %ptr, i64 1
%arrayidx2 = getelementptr i16, i16* %ptr, i64 2
%t0 = load volatile i16, i16* %arrayidx0
%t1 = load i16, i16* %arrayidx1
%t2 = load i16, i16* %arrayidx2
ret void
}
; TODO: We should allow inference for atomic (but not volatile) ops.
define void @atomic_is_alright(i16* %ptr) {
; CHECK: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
; CHECK-LABEL: define {{[^@]+}}@atomic_is_alright
; CHECK-SAME: (i16* nocapture nofree nonnull readnone align 2 dereferenceable(6) [[PTR:%.*]]) #[[ATTR2]] {
; CHECK-NEXT: ret void
;
%arrayidx0 = getelementptr i16, i16* %ptr, i64 0
%arrayidx1 = getelementptr i16, i16* %ptr, i64 1
%arrayidx2 = getelementptr i16, i16* %ptr, i64 2
%t0 = load atomic i16, i16* %arrayidx0 unordered, align 2
%t1 = load i16, i16* %arrayidx1
%t2 = load i16, i16* %arrayidx2
ret void
}
declare void @may_not_return()
define void @not_guaranteed_to_transfer_execution(i16* %ptr) {
; CHECK-LABEL: define {{[^@]+}}@not_guaranteed_to_transfer_execution
; CHECK-SAME: (i16* nocapture nofree nonnull readnone align 2 dereferenceable(2) [[PTR:%.*]]) {
; CHECK-NEXT: call void @may_not_return()
; CHECK-NEXT: ret void
;
%arrayidx0 = getelementptr i16, i16* %ptr, i64 0
%arrayidx1 = getelementptr i16, i16* %ptr, i64 1
%arrayidx2 = getelementptr i16, i16* %ptr, i64 2
%t0 = load i16, i16* %arrayidx0
call void @may_not_return()
%t1 = load i16, i16* %arrayidx1
%t2 = load i16, i16* %arrayidx2
ret void
}
; We must have consecutive accesses.
define void @variable_gep_index(i8* %unused, i8* %ptr, i64 %variable_index) {
; CHECK: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
; CHECK-LABEL: define {{[^@]+}}@variable_gep_index
; CHECK-SAME: (i8* nocapture nofree readnone [[UNUSED:%.*]], i8* nocapture nofree nonnull readnone dereferenceable(1) [[PTR:%.*]], i64 [[VARIABLE_INDEX:%.*]]) #[[ATTR2]] {
; CHECK-NEXT: ret void
;
%arrayidx1 = getelementptr i8, i8* %ptr, i64 %variable_index
%arrayidx2 = getelementptr i8, i8* %ptr, i64 2
%t0 = load i8, i8* %ptr
%t1 = load i8, i8* %arrayidx1
%t2 = load i8, i8* %arrayidx2
ret void
}
; Deal with >1 GEP index.
define void @multi_index_gep(<4 x i8>* %ptr) {
; FIXME: %ptr should be dereferenceable(4)
; CHECK: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
; CHECK-LABEL: define {{[^@]+}}@multi_index_gep
; CHECK-SAME: (<4 x i8>* nocapture nofree nonnull readnone dereferenceable(1) [[PTR:%.*]]) #[[ATTR2]] {
; CHECK-NEXT: ret void
;
%arrayidx00 = getelementptr <4 x i8>, <4 x i8>* %ptr, i64 0, i64 0
%t0 = load i8, i8* %arrayidx00
ret void
}
; Could round weird bitwidths down?
define void @not_byte_multiple(i9* %ptr) {
; CHECK: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
; CHECK-LABEL: define {{[^@]+}}@not_byte_multiple
; CHECK-SAME: (i9* nocapture nofree nonnull readnone align 2 dereferenceable(2) [[PTR:%.*]]) #[[ATTR2]] {
; CHECK-NEXT: ret void
;
%arrayidx0 = getelementptr i9, i9* %ptr, i64 0
%t0 = load i9, i9* %arrayidx0
ret void
}
; Missing direct access from the pointer.
define void @no_pointer_deref(i16* %ptr) {
; CHECK: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
; CHECK-LABEL: define {{[^@]+}}@no_pointer_deref
; CHECK-SAME: (i16* nocapture nofree readnone align 2 [[PTR:%.*]]) #[[ATTR2]] {
; CHECK-NEXT: ret void
;
%arrayidx1 = getelementptr i16, i16* %ptr, i64 1
%arrayidx2 = getelementptr i16, i16* %ptr, i64 2
%t1 = load i16, i16* %arrayidx1
%t2 = load i16, i16* %arrayidx2
ret void
}
; Out-of-order is ok, but missing access concludes dereferenceable range.
define void @non_consecutive(i32* %ptr) {
; CHECK: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
; CHECK-LABEL: define {{[^@]+}}@non_consecutive
; CHECK-SAME: (i32* nocapture nofree nonnull readnone align 4 dereferenceable(8) [[PTR:%.*]]) #[[ATTR2]] {
; CHECK-NEXT: ret void
;
%arrayidx1 = getelementptr i32, i32* %ptr, i64 1
%arrayidx0 = getelementptr i32, i32* %ptr, i64 0
%arrayidx3 = getelementptr i32, i32* %ptr, i64 3
%t1 = load i32, i32* %arrayidx1
%t0 = load i32, i32* %arrayidx0
%t3 = load i32, i32* %arrayidx3
ret void
}
; Improve on existing dereferenceable attribute.
define void @more_bytes(i32* dereferenceable(8) %ptr) {
; CHECK: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
; CHECK-LABEL: define {{[^@]+}}@more_bytes
; CHECK-SAME: (i32* nocapture nofree nonnull readnone align 4 dereferenceable(16) [[PTR:%.*]]) #[[ATTR2]] {
; CHECK-NEXT: ret void
;
%arrayidx3 = getelementptr i32, i32* %ptr, i64 3
%arrayidx1 = getelementptr i32, i32* %ptr, i64 1
%arrayidx0 = getelementptr i32, i32* %ptr, i64 0
%arrayidx2 = getelementptr i32, i32* %ptr, i64 2
%t3 = load i32, i32* %arrayidx3
%t1 = load i32, i32* %arrayidx1
%t2 = load i32, i32* %arrayidx2
%t0 = load i32, i32* %arrayidx0
ret void
}
; Improve on existing dereferenceable_or_null attribute.
define void @more_bytes_and_not_null(i32* dereferenceable_or_null(8) %ptr) {
; CHECK: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
; CHECK-LABEL: define {{[^@]+}}@more_bytes_and_not_null
; CHECK-SAME: (i32* nocapture nofree nonnull readnone align 4 dereferenceable(16) [[PTR:%.*]]) #[[ATTR2]] {
; CHECK-NEXT: ret void
;
%arrayidx3 = getelementptr i32, i32* %ptr, i64 3
%arrayidx1 = getelementptr i32, i32* %ptr, i64 1
%arrayidx0 = getelementptr i32, i32* %ptr, i64 0
%arrayidx2 = getelementptr i32, i32* %ptr, i64 2
%t3 = load i32, i32* %arrayidx3
%t1 = load i32, i32* %arrayidx1
%t2 = load i32, i32* %arrayidx2
%t0 = load i32, i32* %arrayidx0
ret void
}
; But don't pessimize existing dereferenceable attribute.
define void @better_bytes(i32* dereferenceable(100) %ptr) {
; CHECK: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
; CHECK-LABEL: define {{[^@]+}}@better_bytes
; CHECK-SAME: (i32* nocapture nofree nonnull readnone align 4 dereferenceable(100) [[PTR:%.*]]) #[[ATTR2]] {
; CHECK-NEXT: ret void
;
%arrayidx3 = getelementptr i32, i32* %ptr, i64 3
%arrayidx1 = getelementptr i32, i32* %ptr, i64 1
%arrayidx0 = getelementptr i32, i32* %ptr, i64 0
%arrayidx2 = getelementptr i32, i32* %ptr, i64 2
%t3 = load i32, i32* %arrayidx3
%t1 = load i32, i32* %arrayidx1
%t2 = load i32, i32* %arrayidx2
%t0 = load i32, i32* %arrayidx0
ret void
}
define void @bitcast(i32* %arg) {
; CHECK: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
; CHECK-LABEL: define {{[^@]+}}@bitcast
; CHECK-SAME: (i32* nocapture nofree nonnull readnone align 4 dereferenceable(8) [[ARG:%.*]]) #[[ATTR2]] {
; CHECK-NEXT: ret void
;
%ptr = bitcast i32* %arg to float*
%arrayidx0 = getelementptr float, float* %ptr, i64 0
%arrayidx1 = getelementptr float, float* %ptr, i64 1
%t0 = load float, float* %arrayidx0
%t1 = load float, float* %arrayidx1
ret void
}
define void @bitcast_different_sizes(double* %arg1, i8* %arg2) {
; CHECK: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
; CHECK-LABEL: define {{[^@]+}}@bitcast_different_sizes
; CHECK-SAME: (double* nocapture nofree nonnull readnone align 4 dereferenceable(12) [[ARG1:%.*]], i8* nocapture nofree nonnull readnone align 4 dereferenceable(16) [[ARG2:%.*]]) #[[ATTR2]] {
; CHECK-NEXT: ret void
;
%ptr1 = bitcast double* %arg1 to float*
%a10 = getelementptr float, float* %ptr1, i64 0
%a11 = getelementptr float, float* %ptr1, i64 1
%a12 = getelementptr float, float* %ptr1, i64 2
%ld10 = load float, float* %a10
%ld11 = load float, float* %a11
%ld12 = load float, float* %a12
%ptr2 = bitcast i8* %arg2 to i64*
%a20 = getelementptr i64, i64* %ptr2, i64 0
%a21 = getelementptr i64, i64* %ptr2, i64 1
%ld20 = load i64, i64* %a20
%ld21 = load i64, i64* %a21
ret void
}
define void @negative_offset(i32* %arg) {
; CHECK: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
; CHECK-LABEL: define {{[^@]+}}@negative_offset
; CHECK-SAME: (i32* nocapture nofree nonnull readnone align 4 dereferenceable(4) [[ARG:%.*]]) #[[ATTR2]] {
; CHECK-NEXT: ret void
;
%ptr = bitcast i32* %arg to float*
%arrayidx0 = getelementptr float, float* %ptr, i64 0
%arrayidx1 = getelementptr float, float* %ptr, i64 -1
%t0 = load float, float* %arrayidx0
%t1 = load float, float* %arrayidx1
ret void
}
define void @stores(i32* %arg) {
; CHECK: Function Attrs: argmemonly nofree norecurse nosync nounwind willreturn writeonly
; CHECK-LABEL: define {{[^@]+}}@stores
; CHECK-SAME: (i32* nocapture nofree nonnull writeonly align 4 dereferenceable(8) [[ARG:%.*]]) #[[ATTR4:[0-9]+]] {
; CHECK-NEXT: [[PTR:%.*]] = bitcast i32* [[ARG]] to float*
; CHECK-NEXT: [[ARRAYIDX0:%.*]] = getelementptr float, float* [[PTR]], i64 0
; CHECK-NEXT: [[ARRAYIDX1:%.*]] = getelementptr float, float* [[PTR]], i64 1
; CHECK-NEXT: store float 1.000000e+00, float* [[ARRAYIDX0]], align 4
; CHECK-NEXT: store float 2.000000e+00, float* [[ARRAYIDX1]], align 4
; CHECK-NEXT: ret void
;
%ptr = bitcast i32* %arg to float*
%arrayidx0 = getelementptr float, float* %ptr, i64 0
%arrayidx1 = getelementptr float, float* %ptr, i64 1
store float 1.0, float* %arrayidx0
store float 2.0, float* %arrayidx1
ret void
}
define void @load_store(i32* %arg) {
; CHECK: Function Attrs: argmemonly nofree norecurse nosync nounwind willreturn writeonly
; CHECK-LABEL: define {{[^@]+}}@load_store
; CHECK-SAME: (i32* nocapture nofree nonnull writeonly align 4 dereferenceable(8) [[ARG:%.*]]) #[[ATTR4]] {
; CHECK-NEXT: [[PTR:%.*]] = bitcast i32* [[ARG]] to float*
; CHECK-NEXT: [[ARRAYIDX1:%.*]] = getelementptr float, float* [[PTR]], i64 1
; CHECK-NEXT: store float 2.000000e+00, float* [[ARRAYIDX1]], align 4
; CHECK-NEXT: ret void
;
%ptr = bitcast i32* %arg to float*
%arrayidx0 = getelementptr float, float* %ptr, i64 0
%arrayidx1 = getelementptr float, float* %ptr, i64 1
%t1 = load float, float* %arrayidx0
store float 2.0, float* %arrayidx1
ret void
}
define void @different_size1(i32* %arg) {
; CHECK: Function Attrs: argmemonly nofree norecurse nosync nounwind willreturn writeonly
; CHECK-LABEL: define {{[^@]+}}@different_size1
; CHECK-SAME: (i32* nocapture nofree noundef nonnull writeonly align 8 dereferenceable(8) [[ARG:%.*]]) #[[ATTR4]] {
; CHECK-NEXT: [[ARG_CAST:%.*]] = bitcast i32* [[ARG]] to double*
; CHECK-NEXT: store double 0.000000e+00, double* [[ARG_CAST]], align 8
; CHECK-NEXT: store i32 0, i32* [[ARG]], align 8
; CHECK-NEXT: ret void
;
%arg-cast = bitcast i32* %arg to double*
store double 0.000000e+00, double* %arg-cast
store i32 0, i32* %arg
ret void
}
define void @different_size2(i32* %arg) {
; CHECK: Function Attrs: argmemonly nofree norecurse nosync nounwind willreturn writeonly
; CHECK-LABEL: define {{[^@]+}}@different_size2
; CHECK-SAME: (i32* nocapture nofree noundef nonnull writeonly align 8 dereferenceable(8) [[ARG:%.*]]) #[[ATTR4]] {
; CHECK-NEXT: store i32 0, i32* [[ARG]], align 8
; CHECK-NEXT: [[ARG_CAST:%.*]] = bitcast i32* [[ARG]] to double*
; CHECK-NEXT: store double 0.000000e+00, double* [[ARG_CAST]], align 8
; CHECK-NEXT: ret void
;
store i32 0, i32* %arg
%arg-cast = bitcast i32* %arg to double*
store double 0.000000e+00, double* %arg-cast
ret void
}
; Make use of MustBeExecuted Explorer
;
; [CFG]
; entry
; / \
; l1 l2
; | X |
; l3 l4
; \ /
; l5
; / \
; l6 l7
; \ /
; end
; According to the above CFG, we can see that instructions in l5 Block must be executed.
; Therefore, %p must be dereferenced.
;
; ATTRIBUTOR_CGSCC_NPM-LABEL: define i32 @require_cfg_analysis(i32 %c, i32* {{.*}} dereferenceable(4) %p)
define i32 @require_cfg_analysis(i32 %c, i32* %p) {
; IS________OPM: Function Attrs: argmemonly nofree norecurse nosync nounwind willreturn writeonly
; IS________OPM-LABEL: define {{[^@]+}}@require_cfg_analysis
; IS________OPM-SAME: (i32 [[C:%.*]], i32* nocapture nofree writeonly [[P:%.*]]) #[[ATTR4]] {
; IS________OPM-NEXT: [[TOBOOL1:%.*]] = icmp eq i32 [[C]], 0
; IS________OPM-NEXT: br i1 [[TOBOOL1]], label [[L1:%.*]], label [[L2:%.*]]
; IS________OPM: l1:
; IS________OPM-NEXT: [[TOBOOL2:%.*]] = icmp eq i32 [[C]], 1
; IS________OPM-NEXT: br i1 [[TOBOOL2]], label [[L3:%.*]], label [[L4:%.*]]
; IS________OPM: l2:
; IS________OPM-NEXT: [[TOBOOL3:%.*]] = icmp eq i32 [[C]], 2
; IS________OPM-NEXT: br i1 [[TOBOOL3]], label [[L3]], label [[L4]]
; IS________OPM: l3:
; IS________OPM-NEXT: br label [[L5:%.*]]
; IS________OPM: l4:
; IS________OPM-NEXT: br label [[L5]]
; IS________OPM: l5:
; IS________OPM-NEXT: [[TOBOOL4:%.*]] = icmp eq i32 [[C]], 4
; IS________OPM-NEXT: br i1 [[TOBOOL4]], label [[L6:%.*]], label [[L7:%.*]]
; IS________OPM: l6:
; IS________OPM-NEXT: store i32 0, i32* [[P]], align 4
; IS________OPM-NEXT: br label [[END:%.*]]
; IS________OPM: l7:
; IS________OPM-NEXT: store i32 1, i32* [[P]], align 4
; IS________OPM-NEXT: br label [[END]]
; IS________OPM: end:
; IS________OPM-NEXT: ret i32 1
;
; IS________NPM: Function Attrs: argmemonly nofree norecurse nosync nounwind willreturn writeonly
; IS________NPM-LABEL: define {{[^@]+}}@require_cfg_analysis
; IS________NPM-SAME: (i32 [[C:%.*]], i32* nocapture nofree nonnull writeonly align 4 dereferenceable(4) [[P:%.*]]) #[[ATTR4]] {
; IS________NPM-NEXT: [[TOBOOL1:%.*]] = icmp eq i32 [[C]], 0
; IS________NPM-NEXT: br i1 [[TOBOOL1]], label [[L1:%.*]], label [[L2:%.*]]
; IS________NPM: l1:
; IS________NPM-NEXT: [[TOBOOL2:%.*]] = icmp eq i32 [[C]], 1
; IS________NPM-NEXT: br i1 [[TOBOOL2]], label [[L3:%.*]], label [[L4:%.*]]
; IS________NPM: l2:
; IS________NPM-NEXT: [[TOBOOL3:%.*]] = icmp eq i32 [[C]], 2
; IS________NPM-NEXT: br i1 [[TOBOOL3]], label [[L3]], label [[L4]]
; IS________NPM: l3:
; IS________NPM-NEXT: br label [[L5:%.*]]
; IS________NPM: l4:
; IS________NPM-NEXT: br label [[L5]]
; IS________NPM: l5:
; IS________NPM-NEXT: [[TOBOOL4:%.*]] = icmp eq i32 [[C]], 4
; IS________NPM-NEXT: br i1 [[TOBOOL4]], label [[L6:%.*]], label [[L7:%.*]]
; IS________NPM: l6:
; IS________NPM-NEXT: store i32 0, i32* [[P]], align 4
; IS________NPM-NEXT: br label [[END:%.*]]
; IS________NPM: l7:
; IS________NPM-NEXT: store i32 1, i32* [[P]], align 4
; IS________NPM-NEXT: br label [[END]]
; IS________NPM: end:
; IS________NPM-NEXT: ret i32 1
;
%tobool1 = icmp eq i32 %c, 0
br i1 %tobool1, label %l1, label %l2
l1:
%tobool2 = icmp eq i32 %c, 1
br i1 %tobool2, label %l3, label %l4
l2:
%tobool3 = icmp eq i32 %c, 2
br i1 %tobool3, label %l3, label %l4
l3:
br label %l5
l4:
br label %l5
l5:
%tobool4 = icmp eq i32 %c, 4
br i1 %tobool4, label %l6, label %l7
l6:
store i32 0, i32* %p
br label %end
l7:
store i32 1, i32* %p
br label %end
end:
ret i32 1
}
;.
; CHECK: attributes #[[ATTR0]] = { argmemonly nofree norecurse nosync nounwind readonly willreturn }
; CHECK: attributes #[[ATTR1]] = { argmemonly nofree norecurse nosync nounwind willreturn }
; CHECK: attributes #[[ATTR2]] = { nofree norecurse nosync nounwind readnone willreturn }
; CHECK: attributes #[[ATTR3]] = { argmemonly nofree norecurse nounwind willreturn }
; CHECK: attributes #[[ATTR4]] = { argmemonly nofree norecurse nosync nounwind willreturn writeonly }
;.