llvm-6502/test/CodeGen/ARM/mul_const.ll at f24bd401eb453f3e15e69a093b3943f7946d5bed - llvm-6502 - Applefritter: Git

6502/llvm-6502

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Evan Cheng af9e7a7c20 Fix ARM isle code that optimize multiply by constants which are power-of-2 +/- 1.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76520 91177308-0d34-0410-b5e6-96231b3b80d8

2009-07-21 00:31:12 +00:00

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LLVM

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 ; RUN: llvm-as < %s | llc -march=arm | FileCheck %s
 define i32 @t1(i32 %v) nounwind readnone {
 entry:
 ; CHECK: t1:
 ; CHECK: add r0, r0, r0, lsl #3
 	%0 = mul i32 %v, 9
 	ret i32 %0
 }
 define i32 @t2(i32 %v) nounwind readnone {
 entry:
 ; CHECK: t2:
 ; CHECK: rsb r0, r0, r0, lsl #3
 	%0 = mul i32 %v, 7
 	ret i32 %0
 }