diff options
Diffstat (limited to 'toolchain-layer/recipes-devtools/gcc/gcc-4.6/linaro/gcc-4.6-linaro-r106776.patch')
| -rw-r--r-- | toolchain-layer/recipes-devtools/gcc/gcc-4.6/linaro/gcc-4.6-linaro-r106776.patch | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/toolchain-layer/recipes-devtools/gcc/gcc-4.6/linaro/gcc-4.6-linaro-r106776.patch b/toolchain-layer/recipes-devtools/gcc/gcc-4.6/linaro/gcc-4.6-linaro-r106776.patch new file mode 100644 index 0000000000..3d4d5c5049 --- /dev/null +++ b/toolchain-layer/recipes-devtools/gcc/gcc-4.6/linaro/gcc-4.6-linaro-r106776.patch @@ -0,0 +1,46 @@ +2011-07-15 Michael Hope <michael.hope@linaro.org> + + gcc/ + Backport from mainline: + 2011-03-22 Eric Botcazou <ebotcazou@adacore.com> + + * combine.c (simplify_set): Try harder to find the best CC mode when + simplifying a nested COMPARE on the RHS. + +=== modified file 'gcc/combine.c' +--- old/gcc/combine.c 2011-05-27 14:31:18 +0000 ++++ new/gcc/combine.c 2011-07-11 03:52:31 +0000 +@@ -6287,10 +6287,18 @@ + enum rtx_code new_code; + rtx op0, op1, tmp; + int other_changed = 0; ++ rtx inner_compare = NULL_RTX; + enum machine_mode compare_mode = GET_MODE (dest); + + if (GET_CODE (src) == COMPARE) +- op0 = XEXP (src, 0), op1 = XEXP (src, 1); ++ { ++ op0 = XEXP (src, 0), op1 = XEXP (src, 1); ++ if (GET_CODE (op0) == COMPARE && op1 == const0_rtx) ++ { ++ inner_compare = op0; ++ op0 = XEXP (inner_compare, 0), op1 = XEXP (inner_compare, 1); ++ } ++ } + else + op0 = src, op1 = CONST0_RTX (GET_MODE (src)); + +@@ -6332,6 +6340,12 @@ + need to use a different CC mode here. */ + if (GET_MODE_CLASS (GET_MODE (op0)) == MODE_CC) + compare_mode = GET_MODE (op0); ++ else if (inner_compare ++ && GET_MODE_CLASS (GET_MODE (inner_compare)) == MODE_CC ++ && new_code == old_code ++ && op0 == XEXP (inner_compare, 0) ++ && op1 == XEXP (inner_compare, 1)) ++ compare_mode = GET_MODE (inner_compare); + else + compare_mode = SELECT_CC_MODE (new_code, op0, op1); + + |