llvm/test/CodeGen/AArch64/bitfield-insert-0.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

20 lines
657 B
LLVM

; RUN: llc -mtriple=aarch64-none-linux-gnu -filetype=obj < %s | llvm-objdump -disassemble - | FileCheck %s
; The encoding of lsb -> immr in the CGed bitfield instructions was wrong at one
; point, in the edge case where lsb = 0. Just make sure.
define void @test_bfi0(i32* %existing, i32* %new) {
; CHECK: bfxil {{w[0-9]+}}, {{w[0-9]+}}, #0, #18
%oldval = load volatile i32* %existing
%oldval_keep = and i32 %oldval, 4294705152 ; 0xfffc_0000
%newval = load volatile i32* %new
%newval_masked = and i32 %newval, 262143 ; = 0x0003_ffff
%combined = or i32 %newval_masked, %oldval_keep
store volatile i32 %combined, i32* %existing
ret void
}