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[InstCombine] Add select freeze poison store tests (NFC) #129775

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Merged
merged 1 commit into from
Mar 6, 2025
Merged

[InstCombine] Add select freeze poison store tests (NFC) #129775

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38 changes: 38 additions & 0 deletions llvm/test/Transforms/InstCombine/select.ll
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Original file line number Diff line number Diff line change
Expand Up @@ -4901,3 +4901,41 @@ define i32 @src_simplify_2x_at_once_and(i32 %x, i32 %y) {
%cond = select i1 %and0, i32 %sub, i32 %xor
ret i32 %cond
}

define void @select_freeze_poison_parameter(ptr noundef %addr.src, ptr %addr.tgt, i1 %cond) {
; CHECK-LABEL: @select_freeze_poison_parameter(
; CHECK-NEXT: [[ADDR_SRC:%.*]] = select i1 [[COND:%.*]], ptr [[ADDR_SRC1:%.*]], ptr null
; CHECK-NEXT: store ptr [[ADDR_SRC]], ptr [[ADDR_TGT:%.*]], align 8
; CHECK-NEXT: ret void
;
%freeze = freeze ptr poison
%select.addr = select i1 %cond, ptr %addr.src, ptr %freeze
store ptr %select.addr, ptr %addr.tgt
ret void
}

@glb = global ptr null

define void @select_freeze_poison_global(ptr %addr.tgt, i1 %cond) {
; CHECK-LABEL: @select_freeze_poison_global(
; CHECK-NEXT: [[SELECT_ADDR:%.*]] = select i1 [[COND:%.*]], ptr @glb, ptr null
; CHECK-NEXT: store ptr [[SELECT_ADDR]], ptr [[ADDR_TGT:%.*]], align 8
; CHECK-NEXT: ret void
;
%freeze = freeze ptr poison
%select.addr = select i1 %cond, ptr @glb, ptr %freeze
store ptr %select.addr, ptr %addr.tgt
ret void
}

define void @select_freeze_poison_constant(ptr %addr.tgt, i1 %cond) {
; CHECK-LABEL: @select_freeze_poison_constant(
; CHECK-NEXT: [[SELECT_ADDR:%.*]] = select i1 [[COND:%.*]], i32 72, i32 0
; CHECK-NEXT: store i32 [[SELECT_ADDR]], ptr [[ADDR_TGT:%.*]], align 4
; CHECK-NEXT: ret void
;
%freeze = freeze i32 poison
%select.addr = select i1 %cond, i32 72, i32 %freeze
store i32 %select.addr, ptr %addr.tgt
ret void
}