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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30581 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2006-09-22 11:36:17 +00:00
parent 17cdf7b0f4
commit 75645496fa
1 changed files with 21 additions and 0 deletions
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21
lib/Target/ARM/README.txt
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@ -7,3 +7,24 @@ Consider implementing a select with two conditional moves:
cmp x, y
moveq dst, a
movne dst, b
----------------------------------------------------------
%tmp1 = shl int %b, ubyte %c
%tmp4 = add int %a, %tmp1
compiles to
add r0, r0, r1, lsl r2
but
%tmp1 = shl int %b, ubyte %c
%tmp4 = add int %tmp1, %a
compiles to
mov r1, r1, lsl r2
add r0, r1, r0
----------------------------------------------------------