107 lines
3.3 KiB
LLVM
107 lines
3.3 KiB
LLVM
; ModuleID = 'bug.c'
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; RUN: opt -O2 -S < %s | FileCheck %s
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; CHECK-LABEL: main
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; CHECK: if.end
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; CHECK: store
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; CHECK: memset
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; CHECK: if.then
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; CHECK: store
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; CHECK: memset
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@d = common global i32 0, align 4
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@b = common global i32 0, align 4
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@f = common global [1 x [3 x i8]] zeroinitializer, align 1
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@e = common global i32 0, align 4
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@c = common global i32 0, align 4
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@a = common global i32 0, align 4
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; Function Attrs: nounwind uwtable
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define void @fn1() {
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entry:
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store i32 0, i32* @d, align 4
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br label %for.cond
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for.cond: ; preds = %for.inc8, %entry
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%0 = load i32, i32* @d, align 4
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%cmp = icmp slt i32 %0, 2
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br i1 %cmp, label %for.body, label %for.end10
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for.body: ; preds = %for.cond
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%1 = load i32, i32* @d, align 4
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%idxprom = sext i32 %1 to i64
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%2 = load i32, i32* @b, align 4
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%idxprom1 = sext i32 %2 to i64
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%arrayidx = getelementptr inbounds [1 x [3 x i8]], [1 x [3 x i8]]* @f, i32 0, i64 %idxprom1
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%arrayidx2 = getelementptr inbounds [3 x i8], [3 x i8]* %arrayidx, i32 0, i64 %idxprom
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store i8 0, i8* %arrayidx2, align 1
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store i32 0, i32* @e, align 4
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br label %for.cond3
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for.cond3: ; preds = %for.inc, %for.body
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%3 = load i32, i32* @e, align 4
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%cmp4 = icmp slt i32 %3, 3
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br i1 %cmp4, label %for.body5, label %for.end
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for.body5: ; preds = %for.cond3
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%4 = load i32, i32* @c, align 4
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%tobool = icmp ne i32 %4, 0
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br i1 %tobool, label %if.then, label %if.end
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if.then: ; preds = %for.body5
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%5 = load i32, i32* @a, align 4
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%dec = add nsw i32 %5, -1
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store i32 %dec, i32* @a, align 4
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br label %if.end
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if.end: ; preds = %if.then, %for.body5
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%6 = load i32, i32* @e, align 4
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%idxprom6 = sext i32 %6 to i64
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%arrayidx7 = getelementptr inbounds [3 x i8], [3 x i8]* getelementptr inbounds ([1 x [3 x i8]], [1 x [3 x i8]]* @f, i32 0, i64 0), i32 0, i64 %idxprom6
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store i8 1, i8* %arrayidx7, align 1
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br label %for.inc
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for.inc: ; preds = %if.end
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%7 = load i32, i32* @e, align 4
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%inc = add nsw i32 %7, 1
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store i32 %inc, i32* @e, align 4
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br label %for.cond3
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for.end: ; preds = %for.cond3
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br label %for.inc8
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for.inc8: ; preds = %for.end
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%8 = load i32, i32* @d, align 4
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%inc9 = add nsw i32 %8, 1
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store i32 %inc9, i32* @d, align 4
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br label %for.cond
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for.end10: ; preds = %for.cond
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ret void
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}
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; Function Attrs: nounwind uwtable
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define i32 @main() {
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entry:
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%retval = alloca i32, align 4
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store i32 0, i32* %retval
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call void @fn1()
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%0 = load i8, i8* getelementptr inbounds ([1 x [3 x i8]], [1 x [3 x i8]]* @f, i32 0, i64 0, i64 1), align 1
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%conv = sext i8 %0 to i32
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%cmp = icmp ne i32 %conv, 1
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @abort()
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unreachable
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if.end: ; preds = %entry
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ret i32 0
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}
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; Function Attrs: noreturn nounwind
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declare void @abort()
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