llvm-6502/test/CodeGen/Thumb/rev.ll
Stephen Lin b4dc0233c9 Convert CodeGen/*/*.ll tests to use the new CHECK-LABEL for easier debugging. No functionality change and all tests pass after conversion.
This was done with the following sed invocation to catch label lines demarking function boundaries:
    sed -i '' "s/^;\( *\)\([A-Z0-9_]*\):\( *\)test\([A-Za-z0-9_-]*\):\( *\)$/;\1\2-LABEL:\3test\4:\5/g" test/CodeGen/*/*.ll
which was written conservatively to avoid false positives rather than false negatives. I scanned through all the changes and everything looks correct.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186258 91177308-0d34-0410-b5e6-96231b3b80d8
2013-07-13 20:38:47 +00:00

57 lines
1.4 KiB
LLVM

; RUN: llc < %s -march=thumb -mattr=+v6 | FileCheck %s
define i32 @test1(i32 %X) nounwind {
; CHECK: test1
; CHECK: rev16 r0, r0
%tmp1 = lshr i32 %X, 8
%X15 = bitcast i32 %X to i32
%tmp4 = shl i32 %X15, 8
%tmp2 = and i32 %tmp1, 16711680
%tmp5 = and i32 %tmp4, -16777216
%tmp9 = and i32 %tmp1, 255
%tmp13 = and i32 %tmp4, 65280
%tmp6 = or i32 %tmp5, %tmp2
%tmp10 = or i32 %tmp6, %tmp13
%tmp14 = or i32 %tmp10, %tmp9
ret i32 %tmp14
}
define i32 @test2(i32 %X) nounwind {
; CHECK: test2
; CHECK: revsh r0, r0
%tmp1 = lshr i32 %X, 8
%tmp1.upgrd.1 = trunc i32 %tmp1 to i16
%tmp3 = trunc i32 %X to i16
%tmp2 = and i16 %tmp1.upgrd.1, 255
%tmp4 = shl i16 %tmp3, 8
%tmp5 = or i16 %tmp2, %tmp4
%tmp5.upgrd.2 = sext i16 %tmp5 to i32
ret i32 %tmp5.upgrd.2
}
; rdar://9147637
define i32 @test3(i16 zeroext %a) nounwind {
entry:
; CHECK-LABEL: test3:
; CHECK: revsh r0, r0
%0 = tail call i16 @llvm.bswap.i16(i16 %a)
%1 = sext i16 %0 to i32
ret i32 %1
}
declare i16 @llvm.bswap.i16(i16) nounwind readnone
define i32 @test4(i16 zeroext %a) nounwind {
entry:
; CHECK-LABEL: test4:
; CHECK: revsh r0, r0
%conv = zext i16 %a to i32
%shr9 = lshr i16 %a, 8
%conv2 = zext i16 %shr9 to i32
%shl = shl nuw nsw i32 %conv, 8
%or = or i32 %conv2, %shl
%sext = shl i32 %or, 16
%conv8 = ashr exact i32 %sext, 16
ret i32 %conv8
}