48 lines
1.3 KiB
LLVM
48 lines
1.3 KiB
LLVM
; RUN: opt -indvars -S < %s | FileCheck %s
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define void @test0(i32* %x) {
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entry:
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br label %for.inc
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for.inc: ; preds = %for.inc, %entry
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%i.01 = phi i32 [ 0, %entry ], [ %add, %for.inc ]
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%and = and i32 %i.01, 3
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%cmp1 = icmp eq i32 %and, 0
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%cond = select i1 %cmp1, i32 0, i32 1
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store i32 %cond, i32* %x, align 4
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%add = add i32 %i.01, 4
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%cmp = icmp ult i32 %add, 8
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br i1 %cmp, label %for.inc, label %for.end
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for.end: ; preds = %for.inc
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ret void
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}
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; Should fold the condition of the select into constant
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; CHECK-LABEL: void @test0(
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; CHECK: icmp eq i32 0, 0
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define void @test1(i32* %a) {
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entry:
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br label %for.body
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for.body: ; preds = %entry, %for.body
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%i.01 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%mul = mul nsw i32 %i.01, 64
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%rem = srem i32 %mul, 8
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%idxprom = sext i32 %rem to i64
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%arrayidx = getelementptr inbounds i32, i32* %a, i64 %idxprom
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store i32 %i.01, i32* %arrayidx, align 4
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%inc = add nsw i32 %i.01, 1
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%cmp = icmp slt i32 %inc, 64
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br i1 %cmp, label %for.body, label %for.end
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for.end: ; preds = %for.body
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ret void
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}
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; Should fold the rem since %mul is multiple of 8
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; CHECK-LABEL: @test1(
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; CHECK-NOT: rem
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; CHECK: sext i32 0 to i64
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