| ; RUN: opt < %s -instcombine -S | grep "call.*stacksave" |
| ; PR1745 |
| 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" |
| target triple = "i686-apple-darwin8" |
| @p = weak global i8* null ; <i8**> [#uses=1] |
| |
| define i32 @main() { |
| entry: |
| %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] |
| br label %lab |
| |
| lab: ; preds = %cleanup31, %entry |
| %n.0 = phi i32 [ 0, %entry ], [ %tmp25, %cleanup31 ] ; <i32> [#uses=2] |
| %tmp2 = call i8* @llvm.stacksave( ) ; <i8*> [#uses=2] |
| %tmp4 = srem i32 %n.0, 47 ; <i32> [#uses=1] |
| %tmp5 = add i32 %tmp4, 1 ; <i32> [#uses=5] |
| %tmp7 = sub i32 %tmp5, 1 ; <i32> [#uses=0] |
| %tmp89 = zext i32 %tmp5 to i64 ; <i64> [#uses=1] |
| %tmp10 = mul i64 %tmp89, 32 ; <i64> [#uses=0] |
| %tmp12 = mul i32 %tmp5, 4 ; <i32> [#uses=0] |
| %tmp1314 = zext i32 %tmp5 to i64 ; <i64> [#uses=1] |
| %tmp15 = mul i64 %tmp1314, 32 ; <i64> [#uses=0] |
| %tmp17 = mul i32 %tmp5, 4 ; <i32> [#uses=1] |
| %tmp18 = alloca i8, i32 %tmp17 ; <i8*> [#uses=1] |
| %tmp1819 = bitcast i8* %tmp18 to i32* ; <i32*> [#uses=2] |
| %tmp21 = getelementptr i32, i32* %tmp1819, i32 0 ; <i32*> [#uses=1] |
| store i32 1, i32* %tmp21, align 4 |
| %tmp2223 = bitcast i32* %tmp1819 to i8* ; <i8*> [#uses=1] |
| store volatile i8* %tmp2223, i8** @p, align 4 |
| %tmp25 = add i32 %n.0, 1 ; <i32> [#uses=2] |
| %tmp27 = icmp sle i32 %tmp25, 999999 ; <i1> [#uses=1] |
| %tmp2728 = zext i1 %tmp27 to i8 ; <i8> [#uses=1] |
| %toBool = icmp ne i8 %tmp2728, 0 ; <i1> [#uses=1] |
| br i1 %toBool, label %cleanup31, label %cond_next |
| |
| cond_next: ; preds = %lab |
| call void @llvm.stackrestore( i8* %tmp2 ) |
| ret i32 0 |
| |
| cleanup31: ; preds = %lab |
| call void @llvm.stackrestore( i8* %tmp2 ) |
| br label %lab |
| } |
| |
| declare i8* @llvm.stacksave() |
| |
| declare void @llvm.stackrestore(i8*) |
