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[ConstraintElim] Add tests with GEP constant expressions.

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This commit is contained in:
Florian Hahn
2023-03-22 13:12:49 +00:00
parent f0111f2039
commit 256c6729d3
1 changed files with 44 additions and 0 deletions
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44
llvm/test/Transforms/ConstraintElimination/gep-constexpr.ll Normal file
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=constraint-elimination -S %s | FileCheck %s
declare void @llvm.assume(i1 noundef) #0
@arr1 = common global [3 x i16] zeroinitializer, align 2
define i1 @gep_constexpr_index_lt_upper(i32 noundef %i) {
; CHECK-LABEL: @gep_constexpr_index_lt_upper(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[I:%.*]], 3
; CHECK-NEXT: call void @llvm.assume(i1 [[CMP]])
; CHECK-NEXT: [[IDXPROM:%.*]] = zext i32 [[I]] to i64
; CHECK-NEXT: [[UPPER:%.*]] = getelementptr inbounds i16, ptr @arr1, i64 [[IDXPROM]]
; CHECK-NEXT: [[C_1:%.*]] = icmp ult ptr [[UPPER]], getelementptr inbounds ([3 x i16], ptr @arr1, i64 1, i64 0)
; CHECK-NEXT: ret i1 [[C_1]]
;
entry:
%cmp = icmp ult i32 %i, 3
call void @llvm.assume(i1 %cmp)
%idxprom = zext i32 %i to i64
%upper = getelementptr inbounds i16, ptr @arr1, i64 %idxprom
%c.1 = icmp ult ptr %upper, getelementptr inbounds ([3 x i16], ptr @arr1, i64 1, i64 0)
ret i1 %c.1
}
define i1 @gep_constexpr_index_may_be_gt_upper(i32 noundef %i) {
; CHECK-LABEL: @gep_constexpr_index_may_be_gt_upper(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[I:%.*]], 3
; CHECK-NEXT: call void @llvm.assume(i1 [[CMP]])
; CHECK-NEXT: [[IDXPROM:%.*]] = zext i32 [[I]] to i64
; CHECK-NEXT: [[UPPER:%.*]] = getelementptr inbounds i16, ptr @arr1, i64 [[IDXPROM]]
; CHECK-NEXT: [[C_1:%.*]] = icmp ult ptr [[UPPER]], getelementptr inbounds ([3 x i16], ptr @arr1, i64 0, i64 2)
; CHECK-NEXT: ret i1 [[C_1]]
;
entry:
%cmp = icmp ult i32 %i, 3
call void @llvm.assume(i1 %cmp)
%idxprom = zext i32 %i to i64
%upper = getelementptr inbounds i16, ptr @arr1, i64 %idxprom
%c.1 = icmp ult ptr %upper, getelementptr inbounds ([3 x i16], ptr @arr1, i64 0, i64 2)
ret i1 %c.1
}