1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=constraint-elimination -S %s | FileCheck %s
target datalayout = "p:32:32:32"
declare void @llvm.assume(i1)
define i1 @gep_idx_implicit_truncate(ptr %dst, i64 %off) {
; CHECK-LABEL: @gep_idx_implicit_truncate(
; CHECK-NEXT: [[POS:%.*]] = icmp sge i64 [[OFF:%.*]], 0
; CHECK-NEXT: call void @llvm.assume(i1 [[POS]])
; CHECK-NEXT: [[GEP_OFF:%.*]] = getelementptr inbounds i8, ptr [[DST:%.*]], i64 [[OFF]]
; CHECK-NEXT: ret i1 true
;
%pos = icmp sge i64 %off, 0
call void @llvm.assume(i1 %pos)
%gep.off = getelementptr inbounds i8, ptr %dst, i64 %off
%cmp = icmp ule ptr %dst, %gep.off
ret i1 %cmp
}
define i1 @gep_idx_explicit_truncate(ptr %dst, i64 %off) {
; CHECK-LABEL: @gep_idx_explicit_truncate(
; CHECK-NEXT: [[POS:%.*]] = icmp sge i64 [[OFF:%.*]], 0
; CHECK-NEXT: call void @llvm.assume(i1 [[POS]])
; CHECK-NEXT: [[T:%.*]] = trunc i64 [[OFF]] to i32
; CHECK-NEXT: [[GEP_OFF:%.*]] = getelementptr inbounds i8, ptr [[DST:%.*]], i32 [[T]]
; CHECK-NEXT: [[CMP:%.*]] = icmp ule ptr [[DST]], [[GEP_OFF]]
; CHECK-NEXT: ret i1 [[CMP]]
;
%pos = icmp sge i64 %off, 0
call void @llvm.assume(i1 %pos)
%t = trunc i64 %off to i32
%gep.off = getelementptr inbounds i8, ptr %dst, i32 %t
%cmp = icmp ule ptr %dst, %gep.off
ret i1 %cmp
}
|
