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