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
38
39
40
41
42
43
|
; RUN: opt < %s -basicaa -globalopt -instcombine -loop-rotate -licm -instcombine -indvars -loop-deletion -constmerge -S | FileCheck %s
; PR11882: ComputeLoadConstantCompareExitLimit crash.
;
; for.body is deleted leaving a loop-invariant load.
; CHECK-NOT: for.body
target datalayout = "e-p:64:64:64-n32:64"
@func_21_l_773 = external global i32, align 4
@g_814 = external global i32, align 4
@g_244 = internal global [1 x [0 x i32]] zeroinitializer, align 4
define void @func_21() nounwind uwtable ssp {
entry:
br label %lbl_818
lbl_818: ; preds = %for.end, %entry
call void (...)* @func_27()
store i32 0, i32* @g_814, align 4
br label %for.cond
for.cond: ; preds = %for.body, %lbl_818
%0 = load i32* @g_814, align 4
%cmp = icmp sle i32 %0, 0
br i1 %cmp, label %for.body, label %for.end
for.body: ; preds = %for.cond
%idxprom = sext i32 %0 to i64
%arrayidx = getelementptr inbounds [0 x i32]* getelementptr inbounds ([1 x [0 x i32]]* @g_244, i32 0, i64 0), i32 0, i64 %idxprom
%1 = load i32* %arrayidx, align 1
store i32 %1, i32* @func_21_l_773, align 4
store i32 1, i32* @g_814, align 4
br label %for.cond
for.end: ; preds = %for.cond
%2 = load i32* @func_21_l_773, align 4
%tobool = icmp ne i32 %2, 0
br i1 %tobool, label %lbl_818, label %if.end
if.end: ; preds = %for.end
ret void
}
declare void @func_27(...)
|
