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; REQUIRES: asserts
; RUN: opt -mcpu=core-avx2 -passes=loop-unroll -debug-only=loop-unroll -S -unroll-allow-partial < %s 2>&1 | FileCheck %s
target triple = "x86_64-unknown-linux-gnu"
; CHECK: Loop Unroll: F[foo] Loop %loop.header
; CHECK: Loop Size = 25
; CHECK: UNROLLING loop %loop.header by 2
; CHECK: Loop Unroll: F[foo] Loop %loop.2.header
; CHECK: Loop Size = 27
; CHECK-NOT: UNROLLING loop %loop.2.header
define void @foo(ptr %out) {
entry:
%0 = alloca [1024 x i32]
%x0 = alloca [1024 x i32]
%x01 = alloca [1024 x i32]
%x02 = alloca [1024 x i32]
%x03 = alloca [1024 x i32]
%x04 = alloca [1024 x i32]
%x05 = alloca [1024 x i32]
%x06 = alloca [1024 x i32]
br label %loop.header
loop.header:
%counter = phi i32 [0, %entry], [%inc, %loop.inc]
br label %loop.body
loop.body:
%ptr = getelementptr [1024 x i32], ptr %0, i32 0, i32 %counter
store i32 %counter, ptr %ptr
%val = add i32 %counter, 5
%xptr = getelementptr [1024 x i32], ptr %x0, i32 0, i32 %counter
store i32 %val, ptr %xptr
%val1 = add i32 %counter, 6
%xptr1 = getelementptr [1024 x i32], ptr %x01, i32 0, i32 %counter
store i32 %val1, ptr %xptr1
%val2 = add i32 %counter, 7
%xptr2 = getelementptr [1024 x i32], ptr %x02, i32 0, i32 %counter
store i32 %val2, ptr %xptr2
%val3 = add i32 %counter, 8
%xptr3 = getelementptr [1024 x i32], ptr %x03, i32 0, i32 %counter
store i32 %val3, ptr %xptr3
%val4 = add i32 %counter, 9
%xptr4 = getelementptr [1024 x i32], ptr %x04, i32 0, i32 %counter
store i32 %val4, ptr %xptr4
%val5 = add i32 %counter, 10
%xptr5 = getelementptr [1024 x i32], ptr %x05, i32 0, i32 %counter
store i32 %val5, ptr %xptr5
br label %loop.inc
loop.inc:
%inc = add i32 %counter, 2
%1 = icmp sge i32 %inc, 1023
br i1 %1, label %exit.0, label %loop.header
exit.0:
%2 = getelementptr [1024 x i32], ptr %0, i32 0, i32 5
%3 = load i32, ptr %2
store i32 %3, ptr %out
br label %loop.2.header
loop.2.header:
%counter.2 = phi i32 [0, %exit.0], [%inc.2, %loop.2.inc]
br label %loop.2.body
loop.2.body:
%ptr.2 = getelementptr [1024 x i32], ptr %0, i32 0, i32 %counter.2
store i32 %counter.2, ptr %ptr.2
%val.2 = add i32 %counter.2, 5
%xptr.2 = getelementptr [1024 x i32], ptr %x0, i32 0, i32 %counter.2
store i32 %val.2, ptr %xptr.2
%val1.2 = add i32 %counter.2, 6
%xptr1.2 = getelementptr [1024 x i32], ptr %x01, i32 0, i32 %counter.2
store i32 %val1, ptr %xptr1.2
%val2.2 = add i32 %counter.2, 7
%xptr2.2 = getelementptr [1024 x i32], ptr %x02, i32 0, i32 %counter.2
store i32 %val2, ptr %xptr2.2
%val3.2 = add i32 %counter.2, 8
%xptr3.2 = getelementptr [1024 x i32], ptr %x03, i32 0, i32 %counter.2
store i32 %val3.2, ptr %xptr3.2
%val4.2 = add i32 %counter.2, 9
%xptr4.2 = getelementptr [1024 x i32], ptr %x04, i32 0, i32 %counter.2
store i32 %val4.2, ptr %xptr4.2
%val5.2 = add i32 %counter.2, 10
%xptr5.2 = getelementptr [1024 x i32], ptr %x05, i32 0, i32 %counter.2
store i32 %val5.2, ptr %xptr5.2
%xptr6.2 = getelementptr [1024 x i32], ptr %x06, i32 0, i32 %counter.2
store i32 %val5.2, ptr %xptr6.2
br label %loop.2.inc
loop.2.inc:
%inc.2 = add i32 %counter.2, 2
%4 = icmp sge i32 %inc.2, 1023
br i1 %4, label %exit.2, label %loop.2.header
exit.2:
%x2 = getelementptr [1024 x i32], ptr %0, i32 0, i32 6
%x3 = load i32, ptr %x2
%out2 = getelementptr i32, ptr %out, i32 1
store i32 %3, ptr %out2
ret void
}
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