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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
; RUN: opt -passes='drop-unnecessary-assumes' -S %s | FileCheck %s
; RUN: opt -passes='drop-unnecessary-assumes<drop-deref>' -S %s | FileCheck --check-prefix=DROP-DEREF %s
declare void @use(ptr)
define i8 @test_dereferenceable_assume_ptr_not_used(ptr %p, i64 %size) {
; CHECK-LABEL: define i8 @test_dereferenceable_assume_ptr_not_used(
; CHECK-SAME: ptr [[P:%.*]], i64 [[SIZE:%.*]]) {
; CHECK-NEXT: call void @llvm.assume(i1 true) [ "dereferenceable"(ptr [[P]], i64 [[SIZE]]) ]
; CHECK-NEXT: ret i8 0
;
; DROP-DEREF-LABEL: define i8 @test_dereferenceable_assume_ptr_not_used(
; DROP-DEREF-SAME: ptr [[P:%.*]], i64 [[SIZE:%.*]]) {
; DROP-DEREF-NEXT: ret i8 0
;
call void @llvm.assume(i1 true) [ "dereferenceable"(ptr %p, i64 %size) ]
ret i8 0
}
define i8 @test_dereferenceable_assume_ptr_used_variable_size(ptr %p, i64 %size) {
; CHECK-LABEL: define i8 @test_dereferenceable_assume_ptr_used_variable_size(
; CHECK-SAME: ptr [[P:%.*]], i64 [[SIZE:%.*]]) {
; CHECK-NEXT: call void @llvm.assume(i1 true) [ "dereferenceable"(ptr [[P]], i64 [[SIZE]]) ]
; CHECK-NEXT: [[VAL:%.*]] = load i8, ptr [[P]], align 1
; CHECK-NEXT: ret i8 [[VAL]]
;
; DROP-DEREF-LABEL: define i8 @test_dereferenceable_assume_ptr_used_variable_size(
; DROP-DEREF-SAME: ptr [[P:%.*]], i64 [[SIZE:%.*]]) {
; DROP-DEREF-NEXT: [[VAL:%.*]] = load i8, ptr [[P]], align 1
; DROP-DEREF-NEXT: ret i8 [[VAL]]
;
call void @llvm.assume(i1 true) [ "dereferenceable"(ptr %p, i64 %size) ]
%val = load i8, ptr %p
ret i8 %val
}
define i8 @test_dereferenceable_with_align_ptr_used(ptr %p, i64 %size) {
; CHECK-LABEL: define i8 @test_dereferenceable_with_align_ptr_used(
; CHECK-SAME: ptr [[P:%.*]], i64 [[SIZE:%.*]]) {
; CHECK-NEXT: call void @llvm.assume(i1 true) [ "dereferenceable"(ptr [[P]], i64 [[SIZE]]), "align"(ptr [[P]], i64 8) ]
; CHECK-NEXT: [[VAL:%.*]] = load i8, ptr [[P]], align 1
; CHECK-NEXT: ret i8 [[VAL]]
;
; DROP-DEREF-LABEL: define i8 @test_dereferenceable_with_align_ptr_used(
; DROP-DEREF-SAME: ptr [[P:%.*]], i64 [[SIZE:%.*]]) {
; DROP-DEREF-NEXT: call void @llvm.assume(i1 true) [ "align"(ptr [[P]], i64 8) ]
; DROP-DEREF-NEXT: [[VAL:%.*]] = load i8, ptr [[P]], align 1
; DROP-DEREF-NEXT: ret i8 [[VAL]]
;
call void @llvm.assume(i1 true) [ "dereferenceable"(ptr %p, i64 %size), "align"(ptr %p, i64 8) ]
%val = load i8, ptr %p
ret i8 %val
}
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