From ca6859aa2941be5a54f3793bb7de2d2868d3a467 Mon Sep 17 00:00:00 2001 From: Imre Kaloz Date: Mon, 9 Apr 2012 17:00:03 +0000 Subject: upgrade to gcc 4.4.7 SVN-Revision: 31230 --- .../4.4.7/931-avr32_disable_shifted_data_opt.patch | 32 ++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 toolchain/gcc/patches/4.4.7/931-avr32_disable_shifted_data_opt.patch (limited to 'toolchain/gcc/patches/4.4.7/931-avr32_disable_shifted_data_opt.patch') diff --git a/toolchain/gcc/patches/4.4.7/931-avr32_disable_shifted_data_opt.patch b/toolchain/gcc/patches/4.4.7/931-avr32_disable_shifted_data_opt.patch new file mode 100644 index 0000000000..2003e97ae0 --- /dev/null +++ b/toolchain/gcc/patches/4.4.7/931-avr32_disable_shifted_data_opt.patch @@ -0,0 +1,32 @@ +--- a/gcc/config/avr32/avr32.c ++++ b/gcc/config/avr32/avr32.c +@@ -6726,7 +6726,28 @@ avr32_reorg_optimization (void) + } + } + +- if (TARGET_MD_REORG_OPTIMIZATION && (optimize_size || (optimize > 0))) ++ /* Disabled this optimization since it has a bug */ ++ /* In the case where the data instruction the shifted insn gets folded ++ * into is a branch destination, this breaks, i.e. ++ * ++ * add r8, r10, r8 << 2 ++ * 1: ++ * ld.w r11, r8[0] ++ * ... ++ * mov r8, sp ++ * rjmp 1b ++ * ++ * gets folded to: ++ * ++ * 1: ++ * ld.w r11, r10[r8 << 2] ++ * ... ++ * mov r8, sp ++ * rjmp 1b ++ * ++ * which is clearly wrong.. ++ */ ++ if (0 && TARGET_MD_REORG_OPTIMIZATION && (optimize_size || (optimize > 0))) + { + + /* Scan through all insns looking for shifted add operations */ -- cgit v1.2.3