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New case to handle someday

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24075 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nate Begeman
2005-10-28 23:26:57 +00:00
parent 366080c5e6
commit 167f1e2651
1 changed files with 17 additions and 0 deletions
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17
lib/Target/PowerPC/README.txt
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@@ -217,5 +217,22 @@ _test:
stw r2, 0(r3) stw r2, 0(r3)
blr blr
===-------------------------------------------------------------------------===
Compile
int foo(int a) { return a * -2 + 63; }
to
_foo:
slwi r0,r3,1
subfic r3,r0,63
blr
instead of:
_foo:
mulli r2,r3,-2
addi r3,r2,63
blr