derek.holloway
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92 lines
3.0 KiB
LLVM
92 lines
3.0 KiB
LLVM
; RUN: opt -S -passes=instsimplify < %s | FileCheck %s
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%struct.S = type { i32, float }
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%struct.Nested = type { %struct.S, i32 }
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@g = external global i32
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@arr = external global [10 x i32]
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define ptr @zero_index_local(ptr %p) {
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; CHECK-LABEL: @zero_index_local(ptr %p
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; CHECK-NEXT: ret ptr %p
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;
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%sgep = call ptr (ptr, ...) @llvm.structured.gep.p0(ptr elementtype(i32) %p)
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ret ptr %sgep
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}
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define ptr @zero_index_global() {
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; CHECK-LABEL: @zero_index_global(
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; CHECK-NEXT: ret ptr @g
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;
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%sgep = call ptr (ptr, ...) @llvm.structured.gep.p0(ptr elementtype(i32) @g)
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ret ptr %sgep
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}
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define ptr @zero_index_array(ptr %p) {
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; CHECK-LABEL: @zero_index_array(ptr %p
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; CHECK-NEXT: ret ptr %p
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;
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%sgep = call ptr (ptr, ...) @llvm.structured.gep.p0(ptr elementtype([10 x i32]) %p)
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ret ptr %sgep
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}
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define ptr addrspace(11) @zero_index_addrspace(ptr addrspace(11) %p) {
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; CHECK-LABEL: @zero_index_addrspace(ptr addrspace(11) %p
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; CHECK-NEXT: ret ptr addrspace(11) %p
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;
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%sgep = call ptr addrspace(11) (ptr addrspace(11), ...) @llvm.structured.gep.p11(ptr addrspace(11) elementtype(i32) %p)
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ret ptr addrspace(11) %sgep
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}
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define i32 @zero_index_with_load(ptr %p) {
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; CHECK-LABEL: @zero_index_with_load(ptr %p
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; CHECK-NEXT: [[V:%.*]] = load i32, ptr %p, align 4
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; CHECK-NEXT: ret i32 [[V]]
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;
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%sgep = call ptr (ptr, ...) @llvm.structured.gep.p0(ptr elementtype(i32) %p)
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%v = load i32, ptr %sgep, align 4
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ret i32 %v
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}
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; GEP with a zero index can be simplified, but SGEP cannot.
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define ptr @zero_index_struct(ptr %p) {
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; CHECK-LABEL: @zero_index_struct(ptr %p
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; CHECK-NEXT: [[SGEP:%.*]] = call ptr (ptr, ...) @llvm.structured.gep.p0(ptr elementtype(%struct.S) %p, i32 0)
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; CHECK-NEXT: ret ptr [[SGEP]]
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;
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%sgep = call ptr (ptr, ...) @llvm.structured.gep.p0(ptr elementtype(%struct.S) %p, i32 0)
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ret ptr %sgep
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}
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define ptr @one_index_struct(ptr %p) {
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; CHECK-LABEL: @one_index_struct(ptr %p
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; CHECK-NEXT: [[SGEP:%.*]] = call ptr (ptr, ...) @llvm.structured.gep.p0(ptr elementtype(%struct.S) %p, i32 1)
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; CHECK-NEXT: ret ptr [[SGEP]]
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;
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%sgep = call ptr (ptr, ...) @llvm.structured.gep.p0(ptr elementtype(%struct.S) %p, i32 1)
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ret ptr %sgep
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}
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define ptr @multi_index_nested(ptr %p) {
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; CHECK-LABEL: @multi_index_nested(
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; CHECK-NEXT: [[SGEP:%.*]] = call ptr (ptr, ...) @llvm.structured.gep.p0(ptr elementtype(%struct.Nested) %p, i32 0, i32 0)
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; CHECK-NEXT: ret ptr [[SGEP]]
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;
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%sgep = call ptr (ptr, ...) @llvm.structured.gep.p0(ptr elementtype(%struct.Nested) %p, i32 0, i32 0)
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ret ptr %sgep
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}
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define ptr @dynamic_index(ptr %p, i32 %i) {
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; CHECK-LABEL: @dynamic_index(
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; CHECK-NEXT: [[SGEP:%.*]] = call ptr (ptr, ...) @llvm.structured.gep.p0(ptr elementtype([10 x i32]) %p, i32 %i)
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; CHECK-NEXT: ret ptr [[SGEP]]
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;
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%sgep = call ptr (ptr, ...) @llvm.structured.gep.p0(ptr elementtype([10 x i32]) %p, i32 %i)
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ret ptr %sgep
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}
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declare ptr @llvm.structured.gep.p0(ptr, ...) #0
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declare ptr addrspace(11) @llvm.structured.gep.p11(ptr addrspace(11), ...) #0
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attributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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