1 ; RUN: opt < %s -passes=indvars -S | FileCheck %s
2 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
3 target triple = "i386-apple-darwin10.0"
6 ; Indvars shouldn't sink the alloca out of the entry block, even though
7 ; it's not used until after the loop.
8 define i32 @main() nounwind {
10 ; CHECK-NEXT: %result.i = alloca i32, align 4
12 %result.i = alloca i32, align 4 ; <ptr> [#uses=2]
15 while.cond: ; preds = %while.cond, %entry
16 %call = call i32 @bar() nounwind ; <i32> [#uses=1]
17 %tobool = icmp eq i32 %call, 0 ; <i1> [#uses=1]
18 br i1 %tobool, label %while.end, label %while.cond
20 while.end: ; preds = %while.cond
21 store volatile i32 0, ptr %result.i
22 %tmp.i = load volatile i32, ptr %result.i ; <i32> [#uses=0]
27 ; <rdar://problem/10352360>
28 ; Indvars shouldn't sink the first alloca between the stacksave and stackrestore
31 declare ptr @llvm.stacksave() nounwind
32 declare void @llvm.stackrestore(ptr) nounwind
33 define void @h(i64 %n) nounwind uwtable ssp {
35 ; CHECK-NEXT: %vla = alloca ptr
36 ; CHECK-NEXT: %savedstack = call ptr @llvm.stacksave.p0()
38 %vla = alloca ptr, i64 %n, align 16
39 %savedstack = call ptr @llvm.stacksave() nounwind
40 %vla.i = alloca ptr, i64 %n, align 16
44 %indvars.iv37.i = phi i64 [ %indvars.iv.next38.i, %for.body.i ], [ 0, %entry ]
45 %call.i = call ptr (...) @a() nounwind
46 %arrayidx.i = getelementptr inbounds ptr, ptr %vla.i, i64 %indvars.iv37.i
47 store ptr %call.i, ptr %arrayidx.i, align 8
48 %indvars.iv.next38.i = add i64 %indvars.iv37.i, 1
49 %exitcond5 = icmp eq i64 %indvars.iv.next38.i, %n
50 br i1 %exitcond5, label %g.exit, label %for.body.i
53 call void @llvm.stackrestore(ptr %savedstack) nounwind
54 %call1 = call ptr (...) @a(ptr %vla) nounwind