derek.holloway
7502bf64a4
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66 lines
2.5 KiB
LLVM
66 lines
2.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -S -passes=dse < %s | FileCheck %s
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declare ptr @passthrough(ptr)
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define i16 @ret_only() {
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; CHECK-LABEL: define i16 @ret_only() {
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; CHECK-NEXT: [[A:%.*]] = alloca i16, align 1
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; CHECK-NEXT: store i16 1, ptr [[A]], align 1
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; CHECK-NEXT: [[CALL:%.*]] = call ptr @passthrough(ptr readnone captures(ret: address, provenance) [[A]])
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; CHECK-NEXT: [[V:%.*]] = load i16, ptr [[CALL]], align 1
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; CHECK-NEXT: ret i16 [[V]]
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;
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%a = alloca i16, align 1
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store i16 1, ptr %a, align 1
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%call = call ptr @passthrough(ptr readnone captures(ret: address, provenance) %a)
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%v = load i16, ptr %call, align 1
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ret i16 %v
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}
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define i16 @ret_has_more_components() {
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; CHECK-LABEL: define i16 @ret_has_more_components() {
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; CHECK-NEXT: [[A:%.*]] = alloca i16, align 1
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; CHECK-NEXT: store i16 1, ptr [[A]], align 1
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; CHECK-NEXT: [[CALL:%.*]] = call ptr @passthrough(ptr readnone captures(address, ret: address, provenance) [[A]])
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; CHECK-NEXT: [[V:%.*]] = load i16, ptr [[CALL]], align 1
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; CHECK-NEXT: ret i16 [[V]]
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;
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%a = alloca i16, align 1
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store i16 1, ptr %a, align 1
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%call = call ptr @passthrough(ptr readnone captures(address, ret: address, provenance) %a)
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%v = load i16, ptr %call, align 1
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ret i16 %v
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}
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; Okay to drop the store as only the address of %a is captured, so the load
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; cannot be accessing %a.
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define i16 @address_capture() {
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; CHECK-LABEL: define i16 @address_capture() {
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; CHECK-NEXT: [[A:%.*]] = alloca i16, align 1
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; CHECK-NEXT: [[CALL:%.*]] = call ptr @passthrough(ptr readnone captures(address) [[A]])
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; CHECK-NEXT: [[V:%.*]] = load i16, ptr [[CALL]], align 1
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; CHECK-NEXT: ret i16 [[V]]
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;
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%a = alloca i16, align 1
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store i16 1, ptr %a, align 1
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%call = call ptr @passthrough(ptr readnone captures(address) %a)
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%v = load i16, ptr %call, align 1
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ret i16 %v
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}
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define i16 @read_only_capture() {
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; CHECK-LABEL: define i16 @read_only_capture() {
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; CHECK-NEXT: [[A:%.*]] = alloca i16, align 1
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; CHECK-NEXT: store i16 1, ptr [[A]], align 1
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; CHECK-NEXT: [[CALL:%.*]] = call ptr @passthrough(ptr readnone captures(address, read_provenance) [[A]])
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; CHECK-NEXT: [[V:%.*]] = load i16, ptr [[CALL]], align 1
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; CHECK-NEXT: ret i16 [[V]]
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;
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%a = alloca i16, align 1
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store i16 1, ptr %a, align 1
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%call = call ptr @passthrough(ptr readnone captures(address, read_provenance) %a)
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%v = load i16, ptr %call, align 1
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ret i16 %v
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}
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