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