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| ; RUN: opt -basicaa -loop-idiom < %s -S | FileCheck %s
target datalayout = "e-p:32:32:32-p1:64:64:64-p2:16:16:16-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:32-n8:16:32:64"
target triple = "x86_64-apple-darwin10.0.0"
; Two dimensional nested loop should be promoted to one big memset.
define void @test10(i8 addrspace(2)* %X) nounwind ssp {
; CHECK-LABEL: @test10(
; CHECK: entry:
; CHECK-NEXT: call void @llvm.memset.p2i8.i16(i8 addrspace(2)* align 1 %X, i8 0, i16 10000, i1 false)
; CHECK-NOT: store
; CHECK: ret void
entry:
br label %bb.nph
bb.nph: ; preds = %entry, %for.inc10
%i.04 = phi i16 [ 0, %entry ], [ %inc12, %for.inc10 ]
br label %for.body5
for.body5: ; preds = %for.body5, %bb.nph
%j.02 = phi i16 [ 0, %bb.nph ], [ %inc, %for.body5 ]
%mul = mul nsw i16 %i.04, 100
%add = add nsw i16 %j.02, %mul
%arrayidx = getelementptr inbounds i8, i8 addrspace(2)* %X, i16 %add
store i8 0, i8 addrspace(2)* %arrayidx, align 1
%inc = add nsw i16 %j.02, 1
%cmp4 = icmp eq i16 %inc, 100
br i1 %cmp4, label %for.inc10, label %for.body5
for.inc10: ; preds = %for.body5
%inc12 = add nsw i16 %i.04, 1
%cmp = icmp eq i16 %inc12, 100
br i1 %cmp, label %for.end13, label %bb.nph
for.end13: ; preds = %for.inc10
ret void
}
define void @test11_pattern(i32 addrspace(2)* nocapture %P) nounwind ssp {
; CHECK-LABEL: @test11_pattern(
; CHECK-NOT: memset_pattern
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%indvar = phi i64 [ 0, %entry ], [ %indvar.next, %for.body ]
%arrayidx = getelementptr i32, i32 addrspace(2)* %P, i64 %indvar
store i32 1, i32 addrspace(2)* %arrayidx, align 4
%indvar.next = add i64 %indvar, 1
%exitcond = icmp eq i64 %indvar.next, 10000
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body
ret void
}
; PR9815 - This is a partial overlap case that cannot be safely transformed
; into a memcpy.
@g_50 = addrspace(2) global [7 x i32] [i32 0, i32 0, i32 0, i32 0, i32 1, i32 0, i32 0], align 16
define i32 @test14() nounwind {
; CHECK-LABEL: @test14(
; CHECK: for.body:
; CHECK: load i32
; CHECK: store i32
; CHECK: br i1 %cmp
entry:
br label %for.body
for.body: ; preds = %for.inc, %for.body.lr.ph
%tmp5 = phi i32 [ %inc, %for.body ], [ 0, %entry ]
%add = add nsw i32 %tmp5, 4
%idxprom = sext i32 %add to i64
%arrayidx = getelementptr inbounds [7 x i32], [7 x i32] addrspace(2)* @g_50, i32 0, i64 %idxprom
%tmp2 = load i32, i32 addrspace(2)* %arrayidx, align 4
%add4 = add nsw i32 %tmp5, 5
%idxprom5 = sext i32 %add4 to i64
%arrayidx6 = getelementptr inbounds [7 x i32], [7 x i32] addrspace(2)* @g_50, i32 0, i64 %idxprom5
store i32 %tmp2, i32 addrspace(2)* %arrayidx6, align 4
%inc = add nsw i32 %tmp5, 1
%cmp = icmp slt i32 %inc, 2
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.inc
%tmp8 = load i32, i32 addrspace(2)* getelementptr inbounds ([7 x i32], [7 x i32] addrspace(2)* @g_50, i32 0, i64 6), align 4
ret i32 %tmp8
}
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