diff options
Diffstat (limited to 'gcc/rtl.h')
| -rw-r--r-- | gcc/rtl.h | 22 |
1 files changed, 16 insertions, 6 deletions
@@ -129,6 +129,7 @@ struct rtx_def /* 1 in an INSN if it can alter flow of control within this function. + MEM_KEEP_ALIAS_SET_P in a MEM. LINK_COST_ZERO in an INSN_LIST. */ unsigned int jump : 1; /* 1 in an INSN if it can call another function. @@ -855,6 +856,11 @@ extern unsigned int subreg_regno PARAMS ((rtx)); #define ASM_OPERANDS_SOURCE_FILE(RTX) XCSTR ((RTX), 5, ASM_OPERANDS) #define ASM_OPERANDS_SOURCE_LINE(RTX) XCINT ((RTX), 6, ASM_OPERANDS) +/* For a MEM RTX, 1 if we should keep the alias set for this mem + unchanged when we access a component. Set to 1, or example, when we + are already in a non-addressable component of an aggregate. */ +#define MEM_KEEP_ALIAS_SET_P(RTX) ((RTX)->jump) + /* For a MEM rtx, 1 if it's a volatile reference. Also in an ASM_OPERANDS rtx. */ #define MEM_VOLATILE_P(RTX) ((RTX)->volatil) @@ -910,7 +916,10 @@ extern unsigned int subreg_regno PARAMS ((rtx)); /* For a MEM rtx, the size in bytes of the MEM, if known, as an RTX that is always a CONST_INT. */ -#define MEM_SIZE(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->size) +#define MEM_SIZE(RTX) \ +(MEM_ATTRS (RTX) != 0 ? MEM_ATTRS (RTX)->size \ + : GET_MODE (RTX) != BLKmode ? GEN_INT (GET_MODE_SIZE (GET_MODE (RTX))) \ + : 0) /* For a MEM rtx, the alignment in bits. */ #define MEM_ALIGN(RTX) \ @@ -920,11 +929,12 @@ extern unsigned int subreg_regno PARAMS ((rtx)); /* Copy the attributes that apply to memory locations from RHS to LHS. */ -#define MEM_COPY_ATTRIBUTES(LHS, RHS) \ - (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \ - MEM_IN_STRUCT_P (LHS) = MEM_IN_STRUCT_P (RHS), \ - MEM_SCALAR_P (LHS) = MEM_SCALAR_P (RHS), \ - RTX_UNCHANGING_P (LHS) = RTX_UNCHANGING_P (RHS), \ +#define MEM_COPY_ATTRIBUTES(LHS, RHS) \ + (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \ + MEM_IN_STRUCT_P (LHS) = MEM_IN_STRUCT_P (RHS), \ + MEM_SCALAR_P (LHS) = MEM_SCALAR_P (RHS), \ + RTX_UNCHANGING_P (LHS) = RTX_UNCHANGING_P (RHS), \ + MEM_KEEP_ALIAS_SET_P (LHS) = MEM_KEEP_ALIAS_SET_P (RHS), \ MEM_ATTRS (LHS) = MEM_ATTRS (RHS)) /* For a LABEL_REF, 1 means that this reference is to a label outside the |