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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -S -passes=dse < %s | FileCheck %s
declare ptr @passthrough(ptr)
define i16 @ret_only() {
; CHECK-LABEL: define i16 @ret_only() {
; CHECK-NEXT: [[A:%.*]] = alloca i16, align 1
; CHECK-NEXT: store i16 1, ptr [[A]], align 1
; CHECK-NEXT: [[CALL:%.*]] = call ptr @passthrough(ptr readnone captures(ret: address, provenance) [[A]])
; CHECK-NEXT: [[V:%.*]] = load i16, ptr [[CALL]], align 1
; CHECK-NEXT: ret i16 [[V]]
;
%a = alloca i16, align 1
store i16 1, ptr %a, align 1
%call = call ptr @passthrough(ptr readnone captures(ret: address, provenance) %a)
%v = load i16, ptr %call, align 1
ret i16 %v
}
define i16 @ret_has_more_components() {
; CHECK-LABEL: define i16 @ret_has_more_components() {
; CHECK-NEXT: [[A:%.*]] = alloca i16, align 1
; CHECK-NEXT: store i16 1, ptr [[A]], align 1
; CHECK-NEXT: [[CALL:%.*]] = call ptr @passthrough(ptr readnone captures(address, ret: address, provenance) [[A]])
; CHECK-NEXT: [[V:%.*]] = load i16, ptr [[CALL]], align 1
; CHECK-NEXT: ret i16 [[V]]
;
%a = alloca i16, align 1
store i16 1, ptr %a, align 1
%call = call ptr @passthrough(ptr readnone captures(address, ret: address, provenance) %a)
%v = load i16, ptr %call, align 1
ret i16 %v
}
; Okay to drop the store as only the address of %a is captured, so the load
; cannot be accessing %a.
define i16 @address_capture() {
; CHECK-LABEL: define i16 @address_capture() {
; CHECK-NEXT: [[A:%.*]] = alloca i16, align 1
; CHECK-NEXT: [[CALL:%.*]] = call ptr @passthrough(ptr readnone captures(address) [[A]])
; CHECK-NEXT: [[V:%.*]] = load i16, ptr [[CALL]], align 1
; CHECK-NEXT: ret i16 [[V]]
;
%a = alloca i16, align 1
store i16 1, ptr %a, align 1
%call = call ptr @passthrough(ptr readnone captures(address) %a)
%v = load i16, ptr %call, align 1
ret i16 %v
}
define i16 @read_only_capture() {
; CHECK-LABEL: define i16 @read_only_capture() {
; CHECK-NEXT: [[A:%.*]] = alloca i16, align 1
; CHECK-NEXT: store i16 1, ptr [[A]], align 1
; CHECK-NEXT: [[CALL:%.*]] = call ptr @passthrough(ptr readnone captures(address, read_provenance) [[A]])
; CHECK-NEXT: [[V:%.*]] = load i16, ptr [[CALL]], align 1
; CHECK-NEXT: ret i16 [[V]]
;
%a = alloca i16, align 1
store i16 1, ptr %a, align 1
%call = call ptr @passthrough(ptr readnone captures(address, read_provenance) %a)
%v = load i16, ptr %call, align 1
ret i16 %v
}
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