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; Check that we don't crash on corner cases.
; RUN: opt < %s -S -passes=loop-unroll -unroll-max-iteration-count-to-analyze=1000 -unroll-threshold=1 -unroll-max-percent-threshold-boost=200 -o /dev/null
; RUN: opt < %s -S -passes='require<opt-remark-emit>,loop(loop-unroll-full)' -unroll-max-iteration-count-to-analyze=1000 -unroll-threshold=1 -unroll-max-percent-threshold-boost=200 -o /dev/null
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
@known_constant = internal unnamed_addr constant [10 x i32] [i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1], align 16
define void @foo1() {
entry:
br label %for.body
for.body:
%phi = phi i64 [ 0, %entry ], [ %inc, %for.body ]
%idx = zext i32 undef to i64
%add.ptr = getelementptr inbounds i64, ptr null, i64 %idx
%inc = add nuw nsw i64 %phi, 1
%cmp = icmp ult i64 %inc, 999
br i1 %cmp, label %for.body, label %for.exit
for.exit:
ret void
}
define void @foo2() {
entry:
br label %for.body
for.body:
%phi = phi i64 [ 0, %entry ], [ %inc, %for.body ]
%x = getelementptr i32, <4 x ptr> undef, <4 x i32> <i32 1, i32 1, i32 1, i32 1>
%inc = add nuw nsw i64 %phi, 1
%cmp = icmp ult i64 %inc, 999
br i1 %cmp, label %for.body, label %for.exit
for.exit:
ret void
}
define void @cmp_undef() {
entry:
br label %for.body
for.body: ; preds = %for.inc, %entry
%iv.0 = phi i64 [ 0, %entry ], [ %iv.1, %for.inc ]
%arrayidx1 = getelementptr inbounds [10 x i32], ptr @known_constant, i64 0, i64 %iv.0
%x1 = load i32, ptr %arrayidx1, align 4
%cmp = icmp eq i32 %x1, undef
br i1 %cmp, label %if.then, label %for.inc
if.then: ; preds = %for.body
br label %for.inc
for.inc: ; preds = %for.body, %if.then
%iv.1 = add nuw nsw i64 %iv.0, 1
%exitcond = icmp eq i64 %iv.1, 10
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.inc
ret void
}
define void @switch() {
entry:
br label %for.body
for.body:
%iv.0 = phi i64 [ 0, %entry ], [ %iv.1, %for.inc ]
%arrayidx1 = getelementptr inbounds [10 x i32], ptr @known_constant, i64 0, i64 %iv.0
%x1 = load i32, ptr %arrayidx1, align 4
switch i32 %x1, label %l1 [
]
l1:
%x2 = add i32 %x1, 2
br label %for.inc
for.inc:
%iv.1 = add nuw nsw i64 %iv.0, 1
%exitcond = icmp eq i64 %iv.1, 10
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret void
}
define <4 x i32> @vec_load() {
entry:
br label %for.body
for.body:
%phi = phi i64 [ 0, %entry ], [ %inc, %for.body ]
%vec_phi = phi <4 x i32> [ <i32 0, i32 0, i32 0, i32 0>, %entry ], [ %r, %for.body ]
%arrayidx = getelementptr inbounds [10 x i32], ptr @known_constant, i64 0, i64 %phi
%x = load <4 x i32>, < 4 x i32>* %arrayidx, align 4
%r = add <4 x i32> %x, %vec_phi
%inc = add nuw nsw i64 %phi, 1
%cmp = icmp ult i64 %inc, 999
br i1 %cmp, label %for.body, label %for.exit
for.exit:
ret <4 x i32> %r
}
define void @ptrtoint_cast() optsize {
entry:
br label %for.body
for.body:
br i1 true, label %for.inc, label %if.then
if.then:
%x = ptrtoint ptr null to i64
br label %for.inc
for.inc:
br i1 false, label %for.body, label %for.cond.cleanup
for.cond.cleanup:
ret void
}
define void @ptrtoint_cast2() {
entry:
br i1 false, label %for.body.lr.ph, label %exit
for.body.lr.ph:
br label %for.body
for.body:
%iv = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]
%offset = getelementptr inbounds float, ptr null, i32 3
%inc = add nuw nsw i32 %iv, 1
br i1 false, label %for.body, label %exit
exit:
ret void
}
@i = external global i32, align 4
define void @folded_not_to_constantint() {
entry:
br label %for.body
for.body:
%iv = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
%m = phi ptr [ @i, %entry ], [ %m, %for.inc ]
br i1 undef, label %if.else, label %if.then
if.then:
unreachable
if.else:
%cmp = icmp ult ptr %m, null
br i1 %cmp, label %cond.false, label %for.inc
cond.false:
unreachable
for.inc:
%inc = add nuw nsw i32 %iv, 1
%cmp2 = icmp ult i32 %inc, 10
br i1 %cmp2, label %for.body, label %for.end
for.end:
ret void
}
define void @index_too_large() {
entry:
br label %for.body
for.body:
%iv = phi i64 [ -73631599, %entry ], [ %iv.next, %for.inc ]
br i1 undef, label %for.body2, label %for.inc
for.body2:
%idx = getelementptr inbounds [10 x i32], ptr @known_constant, i64 0, i64 %iv
%x = load i32, ptr %idx, align 1
br label %for.inc
for.inc:
%iv.next = add nsw i64 %iv, -1
br i1 undef, label %for.body, label %for.end
for.end:
ret void
}
define void @cmp_type_mismatch() {
entry:
br label %for.header
for.header:
br label %for.body
for.body:
%d = phi ptr [ null, %for.header ]
%cmp = icmp eq ptr %d, null
br i1 undef, label %for.end, label %for.header
for.end:
ret void
}
define void @load_type_mismatch() {
entry:
br label %for.body
for.body:
%iv.0 = phi i64 [ 0, %entry ], [ %iv.1, %for.body ]
%arrayidx1 = getelementptr inbounds [10 x i32], ptr @known_constant, i64 0, i64 %iv.0
%x1 = load i64, ptr %arrayidx1, align 4
%x2 = add i64 10, %x1
%iv.1 = add nuw nsw i64 %iv.0, 1
%exitcond = icmp eq i64 %iv.1, 10
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret void
}
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