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| author | Imre Kaloz <kaloz@openwrt.org> | 2012-04-09 17:00:03 +0000 |
|---|---|---|
| committer | Imre Kaloz <kaloz@openwrt.org> | 2012-04-09 17:00:03 +0000 |
| commit | ca6859aa2941be5a54f3793bb7de2d2868d3a467 (patch) | |
| tree | f57f7292edc652e48dda80a6d90b90f35b8d9f76 /toolchain/gcc/patches/4.4.7/931-avr32_disable_shifted_data_opt.patch | |
| parent | c3bc38689ca57b048e01f36226736f4cd87b477b (diff) | |
| download | upstream-ca6859aa2941be5a54f3793bb7de2d2868d3a467.tar.gz upstream-ca6859aa2941be5a54f3793bb7de2d2868d3a467.tar.bz2 upstream-ca6859aa2941be5a54f3793bb7de2d2868d3a467.zip | |
upgrade to gcc 4.4.7
SVN-Revision: 31230
Diffstat (limited to 'toolchain/gcc/patches/4.4.7/931-avr32_disable_shifted_data_opt.patch')
| -rw-r--r-- | toolchain/gcc/patches/4.4.7/931-avr32_disable_shifted_data_opt.patch | 32 |
1 files changed, 32 insertions, 0 deletions
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 */ |