68 lines
2.7 KiB
LLVM
68 lines
2.7 KiB
LLVM
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; RUN: opt < %s -loop-reduce -S | FileCheck %s
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.9.0"
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; LSR shouldn't normalize IV if it can't be denormalized to the original
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; expression. In this testcase, the normalized expression was denormalized to
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; an expression different from the original, and we were losing sign extension.
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; CHECK: [[TMP:%[a-z]+]] = trunc i32 {{.*}} to i8
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; CHECK: {{%[a-z0-9]+}} = sext i8 [[TMP]] to i32
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@j = common global i32 0, align 4
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@c = common global i32 0, align 4
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@g = common global i32 0, align 4
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@h = common global i8 0, align 1
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@d = common global i32 0, align 4
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@i = common global i32 0, align 4
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@e = common global i32 0, align 4
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@.str = private unnamed_addr constant [4 x i8] c"%x\0A\00", align 1
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@a = common global i32 0, align 4
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@b = common global i16 0, align 2
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; Function Attrs: nounwind optsize ssp uwtable
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define i32 @main() #0 {
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entry:
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store i8 0, i8* @h, align 1
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%0 = load i32, i32* @j, align 4
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%tobool.i = icmp eq i32 %0, 0
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%1 = load i32, i32* @d, align 4
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%cmp3 = icmp sgt i32 %1, -1
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%.lobit = lshr i32 %1, 31
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%.lobit.not = xor i32 %.lobit, 1
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br label %for.body
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for.body: ; preds = %entry, %fn3.exit
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%inc9 = phi i8 [ 0, %entry ], [ %inc, %fn3.exit ]
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%conv = sext i8 %inc9 to i32
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br i1 %tobool.i, label %fn3.exit, label %land.rhs.i
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land.rhs.i: ; preds = %for.body
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store i32 0, i32* @c, align 4
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br label %fn3.exit
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fn3.exit: ; preds = %for.body, %land.rhs.i
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%inc = add i8 %inc9, 1
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%cmp = icmp sgt i8 %inc, -1
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br i1 %cmp, label %for.body, label %for.end
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for.end: ; preds = %fn3.exit
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%.lobit.not. = select i1 %cmp3, i32 %.lobit.not, i32 0
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store i32 %conv, i32* @g, align 4
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store i32 %.lobit.not., i32* @i, align 4
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store i8 %inc, i8* @h, align 1
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%conv7 = sext i8 %inc to i32
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%add = add nsw i32 %conv7, %conv
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store i32 %add, i32* @e, align 4
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%call = tail call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %add) #2
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ret i32 0
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}
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; Function Attrs: nounwind optsize
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declare i32 @printf(i8* nocapture readonly, ...) #1
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attributes #0 = { nounwind optsize ssp uwtable "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind optsize "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #2 = { nounwind optsize }
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