blob: 33fcbab92910696c454ed8008aa356ae27b44587 [file] [log] [blame]
Nico Rieck35a237d2014-02-16 13:27:39 +00001; RUN: opt < %s -basicaa -globalopt -instcombine -loop-rotate -licm -instcombine -indvars -loop-deletion -constmerge -S | FileCheck %s
Andrew Trick7004e4b2012-03-26 22:33:59 +00002; PR11882: ComputeLoadConstantCompareExitLimit crash.
3;
4; for.body is deleted leaving a loop-invariant load.
5; CHECK-NOT: for.body
6target datalayout = "e-p:64:64:64-n32:64"
7
8@func_21_l_773 = external global i32, align 4
9@g_814 = external global i32, align 4
10@g_244 = internal global [1 x [0 x i32]] zeroinitializer, align 4
11
12define void @func_21() nounwind uwtable ssp {
13entry:
14 br label %lbl_818
15
16lbl_818: ; preds = %for.end, %entry
David Blaikie23af6482015-04-16 23:24:18 +000017 call void (...) @func_27()
Manman Ren662ece42013-04-29 22:42:01 +000018 store i32 0, i32* @g_814, align 4
Andrew Trick7004e4b2012-03-26 22:33:59 +000019 br label %for.cond
20
21for.cond: ; preds = %for.body, %lbl_818
David Blaikiea79ac142015-02-27 21:17:42 +000022 %0 = load i32, i32* @g_814, align 4
Andrew Trick7004e4b2012-03-26 22:33:59 +000023 %cmp = icmp sle i32 %0, 0
24 br i1 %cmp, label %for.body, label %for.end
25
26for.body: ; preds = %for.cond
27 %idxprom = sext i32 %0 to i64
David Blaikief72d05b2015-03-13 18:20:45 +000028 %arrayidx = getelementptr inbounds [0 x i32], [0 x i32]* getelementptr inbounds ([1 x [0 x i32]], [1 x [0 x i32]]* @g_244, i32 0, i64 0), i32 0, i64 %idxprom
David Blaikiea79ac142015-02-27 21:17:42 +000029 %1 = load i32, i32* %arrayidx, align 1
Manman Ren662ece42013-04-29 22:42:01 +000030 store i32 %1, i32* @func_21_l_773, align 4
31 store i32 1, i32* @g_814, align 4
Andrew Trick7004e4b2012-03-26 22:33:59 +000032 br label %for.cond
33
34for.end: ; preds = %for.cond
David Blaikiea79ac142015-02-27 21:17:42 +000035 %2 = load i32, i32* @func_21_l_773, align 4
Andrew Trick7004e4b2012-03-26 22:33:59 +000036 %tobool = icmp ne i32 %2, 0
37 br i1 %tobool, label %lbl_818, label %if.end
38
39if.end: ; preds = %for.end
40 ret void
41}
42
43declare void @func_27(...)