1 ; RUN: opt < %s -instcombine -S | grep "call.*stacksave" 2 ; PR1745 3 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" 4 target triple = "i686-apple-darwin8" 5 @p = weak global i8* null ; <i8**> [#uses=1] 6 7 define i32 @main() { 8 entry: 9 %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] 10 br label %lab 11 12 lab: ; preds = %cleanup31, %entry 13 %n.0 = phi i32 [ 0, %entry ], [ %tmp25, %cleanup31 ] ; <i32> [#uses=2] 14 %tmp2 = call i8* @llvm.stacksave( ) ; <i8*> [#uses=2] 15 %tmp4 = srem i32 %n.0, 47 ; <i32> [#uses=1] 16 %tmp5 = add i32 %tmp4, 1 ; <i32> [#uses=5] 17 %tmp7 = sub i32 %tmp5, 1 ; <i32> [#uses=0] 18 %tmp89 = zext i32 %tmp5 to i64 ; <i64> [#uses=1] 19 %tmp10 = mul i64 %tmp89, 32 ; <i64> [#uses=0] 20 %tmp12 = mul i32 %tmp5, 4 ; <i32> [#uses=0] 21 %tmp1314 = zext i32 %tmp5 to i64 ; <i64> [#uses=1] 22 %tmp15 = mul i64 %tmp1314, 32 ; <i64> [#uses=0] 23 %tmp17 = mul i32 %tmp5, 4 ; <i32> [#uses=1] 24 %tmp18 = alloca i8, i32 %tmp17 ; <i8*> [#uses=1] 25 %tmp1819 = bitcast i8* %tmp18 to i32* ; <i32*> [#uses=2] 26 %tmp21 = getelementptr i32, i32* %tmp1819, i32 0 ; <i32*> [#uses=1] 27 store i32 1, i32* %tmp21, align 4 28 %tmp2223 = bitcast i32* %tmp1819 to i8* ; <i8*> [#uses=1] 29 store volatile i8* %tmp2223, i8** @p, align 4 30 %tmp25 = add i32 %n.0, 1 ; <i32> [#uses=2] 31 %tmp27 = icmp sle i32 %tmp25, 999999 ; <i1> [#uses=1] 32 %tmp2728 = zext i1 %tmp27 to i8 ; <i8> [#uses=1] 33 %toBool = icmp ne i8 %tmp2728, 0 ; <i1> [#uses=1] 34 br i1 %toBool, label %cleanup31, label %cond_next 35 36 cond_next: ; preds = %lab 37 call void @llvm.stackrestore( i8* %tmp2 ) 38 ret i32 0 39 40 cleanup31: ; preds = %lab 41 call void @llvm.stackrestore( i8* %tmp2 ) 42 br label %lab 43 } 44 45 declare i8* @llvm.stacksave() 46 47 declare void @llvm.stackrestore(i8*) 48
