1
; RUN: opt < %s -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 ; <i32*> [#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, i32* %result.i
22
%tmp.i = load volatile i32* %result.i ; <i32> [#uses=0]
27
; <rdar://problem/10352360>
28
; Indvars shouldn't sink the first alloca between the stacksave and stackrestore
31
declare i8* @llvm.stacksave() nounwind
32
declare void @llvm.stackrestore(i8*) nounwind
33
define void @h(i64 %n) nounwind uwtable ssp {
35
; CHECK-NEXT: %vla = alloca i8*
36
; CHECK-NEXT: %savedstack = call i8* @llvm.stacksave()
38
%vla = alloca i8*, i64 %n, align 16
39
%savedstack = call i8* @llvm.stacksave() nounwind
40
%vla.i = alloca i8*, i64 %n, align 16
44
%indvars.iv37.i = phi i64 [ %indvars.iv.next38.i, %for.body.i ], [ 0, %entry ]
45
%call.i = call i8* (...)* @a() nounwind
46
%arrayidx.i = getelementptr inbounds i8** %vla.i, i64 %indvars.iv37.i
47
store i8* %call.i, i8** %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(i8* %savedstack) nounwind
54
%call1 = call i8* (...)* @a(i8** %vla) nounwind