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| author | Richard Kenner <kenner@vlsi1.ultra.nyu.edu> | 2001-10-25 12:55:16 +0000 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 2001-10-25 08:55:16 -0400 |
| commit | 10b76d739543e54113cdb8755ba624c03bae4239 (patch) | |
| tree | 0f9f09ded135324a3c1a35af13611e762d6e0cf3 /gcc/rtl.h | |
| parent | 9fb60a0d1a7af546cce200d38315019b1e026a89 (diff) | |
| download | gcc-10b76d739543e54113cdb8755ba624c03bae4239.zip gcc-10b76d739543e54113cdb8755ba624c03bae4239.tar.gz gcc-10b76d739543e54113cdb8755ba624c03bae4239.tar.bz2 | |
alias.c (can_address_p): No longer static.
* alias.c (can_address_p): No longer static.
* emit-rtl.c (get_mem_attrs): New parameter, MODE; all callers changed.
Return 0 if all parameters are default values.
(set_mem_attributes): Set MEM_KEEP_ALIAS_SET_P.
(adjust_address_1): Try harder to compute a size.
* expr.c (expand_assignment, store_constructor): If can't address,
set MEM_KEEP_ALIAS_SET_P.
(store_constructor_field): Don't change set if MEM_KEEP_ALIAS_SET_P.
(store_field): Likewise.
(store_constructor): Simplify call to store_constructor_field.
* expr.h (can_address_p): New declaration.
* gensupport.c (gen_rtx_CONST_INT): New function.
* rtl.h (MEM_KEEP_ALIAS_SET_P): New macro.
(MEM_SIZE): Get size from mode, if not set and not BLKmode.
(MEM_COPY_ATTRIBUTES): Copy MEM_KEEP_ALIAS_SET_P.
From-SVN: r46487
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 |