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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
; RUN: opt -S -passes="separate-const-offset-from-gep<lower-gep>" < %s | FileCheck %s
;; Check that or operations, either with operands with no bits in common or that
;; are disjoint are lowered into constant GEPs. Note that because this is a
;; target-independent test, the GEP separator will lower the separated-off constant
;; part to ptrtoint-based arithmetic.
define void @testOrDoesntSplit(ptr %p) {
; CHECK-LABEL: define void @testOrDoesntSplit(
; CHECK-SAME: ptr [[P:%.*]]) {
; CHECK-NEXT: [[VAR:%.*]] = tail call i64 @foo()
; CHECK-NEXT: [[OFF:%.*]] = or i64 [[VAR]], 10
; CHECK-NEXT: [[Q:%.*]] = getelementptr i8, ptr [[P]], i64 [[OFF]]
; CHECK-NEXT: store i8 0, ptr [[Q]], align 1
; CHECK-NEXT: ret void
;
%var = tail call i64 @foo()
%off = or i64 %var, 10
%q = getelementptr i8, ptr %p, i64 %off
store i8 0, ptr %q
ret void
}
; COM: The check for `or disjoint` removed the old hasNoBitsInCommon()
; COM: check, ensure that failing to annotate an or with disjoint makes
; COM: the optimization fail.
define void @testNoBitsInCommonOrDoesntSplit(ptr %p) {
; CHECK-LABEL: define void @testNoBitsInCommonOrDoesntSplit(
; CHECK-SAME: ptr [[P:%.*]]) {
; CHECK-NEXT: [[VAR:%.*]] = tail call i64 @foo()
; CHECK-NEXT: [[VAR_HIGH:%.*]] = and i64 [[VAR]], -16
; CHECK-NEXT: [[OFF:%.*]] = or i64 [[VAR_HIGH]], 10
; CHECK-NEXT: [[Q:%.*]] = getelementptr i8, ptr [[P]], i64 [[OFF]]
; CHECK-NEXT: store i8 0, ptr [[Q]], align 1
; CHECK-NEXT: ret void
;
%var = tail call i64 @foo()
%var.high = and i64 %var, -16
%off = or i64 %var.high, 10
%q = getelementptr i8, ptr %p, i64 %off
store i8 0, ptr %q
ret void
}
define void @testDisjointOrSplits(ptr %p) {
; CHECK-LABEL: define void @testDisjointOrSplits(
; CHECK-SAME: ptr [[P:%.*]]) {
; CHECK-NEXT: [[VAR:%.*]] = tail call i64 @foo()
; CHECK-NEXT: [[TMP1:%.*]] = ptrtoint ptr [[P]] to i64
; CHECK-NEXT: [[TMP2:%.*]] = add i64 [[TMP1]], [[VAR]]
; CHECK-NEXT: [[TMP3:%.*]] = add i64 [[TMP2]], 10
; CHECK-NEXT: [[TMP4:%.*]] = inttoptr i64 [[TMP3]] to ptr
; CHECK-NEXT: store i8 0, ptr [[TMP4]], align 1
; CHECK-NEXT: ret void
;
%var = tail call i64 @foo()
%off = or disjoint i64 %var, 10
%q = getelementptr i8, ptr %p, i64 %off
store i8 0, ptr %q
ret void
}
declare i64 @foo()
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