commit 675e09b2753c2fcd521bd8f0230a0abf06e9b0e9
author Ningsheng Jian <ningsheng.jian@arm.com> Thu Oct 23 13:48:36 2014 +0800
committer Ian Rogers <irogers@google.com> Wed Nov 05 11:37:37 2014 -0800
tree 9a5f41cb1dd1930ae003feeccb4211d59b465e19
parent 211d45e059935a7874a1ec89846f03d35ffba29f

ARM: Strength reduction for floating-point division

For floating-point division by power of two constants, generate
multiplication by the reciprocal instead.

Change-Id: I39c79eeb26b60cc754ad42045362b79498c755be

compiler/dex/quick/arm/codegen_arm.h

diff --git a/compiler/dex/quick/arm/codegen_arm.h b/compiler/dex/quick/arm/codegen_arm.h
index 179ba02..d235199 100644
--- a/compiler/dex/quick/arm/codegen_arm.h
+++ b/compiler/dex/quick/arm/codegen_arm.h
@@ -90,6 +90,10 @@
     bool SmallLiteralDivRem(Instruction::Code dalvik_opcode, bool is_div, RegLocation rl_src,
                             RegLocation rl_dest, int lit);
     bool EasyMultiply(RegLocation rl_src, RegLocation rl_dest, int lit) OVERRIDE;
+    void GenMultiplyByConstantFloat(RegLocation rl_dest, RegLocation rl_src1,
+                                    int32_t constant) OVERRIDE;
+    void GenMultiplyByConstantDouble(RegLocation rl_dest, RegLocation rl_src1,
+                                     int64_t constant) OVERRIDE;
     LIR* CheckSuspendUsingLoad() OVERRIDE;
     RegStorage LoadHelper(QuickEntrypointEnum trampoline) OVERRIDE;
     LIR* LoadBaseDisp(RegStorage r_base, int displacement, RegStorage r_dest,