diff options
Diffstat (limited to 'toolchain-layer/recipes-devtools/gcc/gcc-4.5/linaro/gcc-4.5-linaro-r99483.patch')
| -rw-r--r-- | toolchain-layer/recipes-devtools/gcc/gcc-4.5/linaro/gcc-4.5-linaro-r99483.patch | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/toolchain-layer/recipes-devtools/gcc/gcc-4.5/linaro/gcc-4.5-linaro-r99483.patch b/toolchain-layer/recipes-devtools/gcc/gcc-4.5/linaro/gcc-4.5-linaro-r99483.patch new file mode 100644 index 0000000000..c0be4a03b1 --- /dev/null +++ b/toolchain-layer/recipes-devtools/gcc/gcc-4.5/linaro/gcc-4.5-linaro-r99483.patch @@ -0,0 +1,63 @@ +2011-02-11 Richard Sandiford <richard.sandiford@linaro.org> + + gcc/ + * cse.c (count_reg_usage): Check side_effects_p. Remove the + separate check for volatile asms. + + gcc/testsuite/ + * gcc.dg/torture/volatile-pic-1.c: New test. + +=== modified file 'gcc/cse.c' +--- old/gcc/cse.c 2010-11-26 12:03:32 +0000 ++++ new/gcc/cse.c 2011-02-11 09:27:19 +0000 +@@ -6634,9 +6634,10 @@ + case CALL_INSN: + case INSN: + case JUMP_INSN: +- /* We expect dest to be NULL_RTX here. If the insn may trap, mark +- this fact by setting DEST to pc_rtx. */ +- if (insn_could_throw_p (x)) ++ /* We expect dest to be NULL_RTX here. If the insn may trap, ++ or if it cannot be deleted due to side-effects, mark this fact ++ by setting DEST to pc_rtx. */ ++ if (insn_could_throw_p (x) || side_effects_p (PATTERN (x))) + dest = pc_rtx; + if (code == CALL_INSN) + count_reg_usage (CALL_INSN_FUNCTION_USAGE (x), counts, dest, incr); +@@ -6676,10 +6677,6 @@ + return; + + case ASM_OPERANDS: +- /* If the asm is volatile, then this insn cannot be deleted, +- and so the inputs *must* be live. */ +- if (MEM_VOLATILE_P (x)) +- dest = NULL_RTX; + /* Iterate over just the inputs, not the constraints as well. */ + for (i = ASM_OPERANDS_INPUT_LENGTH (x) - 1; i >= 0; i--) + count_reg_usage (ASM_OPERANDS_INPUT (x, i), counts, dest, incr); + +=== added file 'gcc/testsuite/gcc.dg/torture/volatile-pic-1.c' +--- old/gcc/testsuite/gcc.dg/torture/volatile-pic-1.c 1970-01-01 00:00:00 +0000 ++++ new/gcc/testsuite/gcc.dg/torture/volatile-pic-1.c 2011-02-11 09:27:19 +0000 +@@ -0,0 +1,20 @@ ++/* { dg-do run } */ ++/* { dg-require-visibility "" } */ ++/* { dg-require-effective-target fpic } */ ++/* { dg-options "-fPIC" } */ ++ ++volatile int x __attribute__((visibility("hidden"))); ++ ++void __attribute__((noinline)) bar (void) ++{ ++#if defined (__arm__) ++ asm volatile ("mov r3,%0" :: "r" (0xdeadbeef) : "r3"); ++#endif ++ (void) x; ++} ++ ++int main (void) ++{ ++ bar (); ++ return 0; ++} + |