; RUN: opt < %s -instcombine -S | grep "call.*llvm.stackrestore"
|
; PR2488
|
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-f80:32:32"
|
target triple = "i386-pc-linux-gnu"
|
@p = weak global i8* null ; <i8**> [#uses=2]
|
|
define i32 @main() nounwind {
|
entry:
|
%tmp248 = call i8* @llvm.stacksave( ) ; <i8*> [#uses=1]
|
%tmp2752 = alloca i32 ; <i32*> [#uses=2]
|
%tmpcast53 = bitcast i32* %tmp2752 to i8* ; <i8*> [#uses=1]
|
store i32 2, i32* %tmp2752, align 4
|
store volatile i8* %tmpcast53, i8** @p, align 4
|
br label %bb44
|
|
bb: ; preds = %bb44
|
ret i32 0
|
|
bb44: ; preds = %bb44, %entry
|
%indvar = phi i32 [ 0, %entry ], [ %tmp3857, %bb44 ] ; <i32> [#uses=1]
|
%tmp249 = phi i8* [ %tmp248, %entry ], [ %tmp2, %bb44 ] ; <i8*> [#uses=1]
|
%tmp3857 = add i32 %indvar, 1 ; <i32> [#uses=3]
|
call void @llvm.stackrestore( i8* %tmp249 )
|
%tmp2 = call i8* @llvm.stacksave( ) ; <i8*> [#uses=1]
|
%tmp4 = srem i32 %tmp3857, 1000 ; <i32> [#uses=2]
|
%tmp5 = add i32 %tmp4, 1 ; <i32> [#uses=1]
|
%tmp27 = alloca i32, i32 %tmp5 ; <i32*> [#uses=3]
|
%tmpcast = bitcast i32* %tmp27 to i8* ; <i8*> [#uses=1]
|
store i32 1, i32* %tmp27, align 4
|
%tmp34 = getelementptr i32, i32* %tmp27, i32 %tmp4 ; <i32*> [#uses=1]
|
store i32 2, i32* %tmp34, align 4
|
store volatile i8* %tmpcast, i8** @p, align 4
|
%exitcond = icmp eq i32 %tmp3857, 999999 ; <i1> [#uses=1]
|
br i1 %exitcond, label %bb, label %bb44
|
}
|
|
declare i8* @llvm.stacksave() nounwind
|
|
declare void @llvm.stackrestore(i8*) nounwind
|
