48 lines
1.2 KiB
LLVM
48 lines
1.2 KiB
LLVM
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; RUN: opt < %s -loop-reduce -S | FileCheck %s
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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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@a = global i32 0, align 4
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@b = global i8 0, align 1
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@c = global [4 x i8] zeroinitializer, align 1
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; Just make sure we don't generate code with uses not dominated by defs.
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; CHECK-LABEL: @main(
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define i32 @main() {
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entry:
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%a0 = load i32, i32* @a, align 4
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%cmpa = icmp slt i32 %a0, 4
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br i1 %cmpa, label %preheader, label %for.end
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preheader:
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%b0 = load i8, i8* @b, align 1
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%b0sext = sext i8 %b0 to i64
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br label %for.body
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for.body:
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%iv = phi i64 [ 0, %preheader ], [ %iv.next, %lor.false ]
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%mul = mul nsw i64 %b0sext, %iv
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%multrunc = trunc i64 %mul to i32
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%cmp = icmp eq i32 %multrunc, 0
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br i1 %cmp, label %lor.false, label %if.then
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lor.false:
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%cgep = getelementptr inbounds [4 x i8], [4 x i8]* @c, i64 0, i64 %iv
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%ci = load i8, i8* %cgep, align 1
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%cisext = sext i8 %ci to i32
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%ivtrunc = trunc i64 %iv to i32
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%cmp2 = icmp eq i32 %cisext, %ivtrunc
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%iv.next = add i64 %iv, 1
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br i1 %cmp2, label %for.body, label %if.then
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if.then:
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tail call void @abort()
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unreachable
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for.end:
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ret i32 0
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}
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declare void @abort()
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