llvm/test/Transforms/InstCombine/2008-06-24-StackRestore.ll
Dan Gohman f2f6ce65b7 Change tests from "opt %s" to "opt < %s" so that opt doesn't see the
input filename so that opt doesn't print the input filename in the
output so that grep lines in the tests don't unintentionally match
strings in the input filename.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81537 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-11 18:01:28 +00:00

40 lines
1.5 KiB
LLVM

; 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
volatile store 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* %tmp27, i32 %tmp4 ; <i32*> [#uses=1]
store i32 2, i32* %tmp34, align 4
volatile store 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