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rs6000.h (LEGITIMATE_LO_SUM_ADDRESS_P): Complex LO_SUM addresses less than word size are not legitimate...

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* config/rs6000/rs6000.h (LEGITIMATE_LO_SUM_ADDRESS_P): Complex
	LO_SUM addresses less than word size are not legitimate,
	because they lead to invalid SUBREGs.
	* config/rs6000/rs6000.c (rs6000_legitimize_address): Likewise.

From-SVN: r47514
This commit is contained in:
Geoffrey Keating 2001-12-01 17:04:18 +00:00 • committed by Geoffrey Keating
parent a22455dfa1
commit 6ac7bf2c9e
3 changed files with 20 additions and 13 deletions
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7
gcc/ChangeLog
View file

@ -1,3 +1,10 @@
2001-12-01 Geoff Keating <geoffk@redhat.com>
* config/rs6000/rs6000.h (LEGITIMATE_LO_SUM_ADDRESS_P): Complex
LO_SUM addresses less than word size are not legitimate,
because they lead to invalid SUBREGs.
* config/rs6000/rs6000.c (rs6000_legitimize_address): Likewise.
2001-12-01 Olivier Hainque <hainque@act-europe.fr>
* unroll.c (loop_iterations): Give up on jumps with null JUMP_LABEL

7
gcc/config/rs6000/rs6000.c
View file

@ -1617,6 +1617,7 @@ rs6000_legitimize_address (x, oldx, mode)
else if (GET_CODE (x) == PLUS
&& GET_CODE (XEXP (x, 0)) == REG
&& GET_CODE (XEXP (x, 1)) != CONST_INT
&& GET_MODE_NUNITS (mode) == 1
&& (TARGET_HARD_FLOAT || TARGET_POWERPC64 || mode != DFmode)
&& (TARGET_POWERPC64 || mode != DImode)
&& mode != TImode)
@ -1640,9 +1641,9 @@ rs6000_legitimize_address (x, oldx, mode)
&& GET_CODE (x) != CONST_INT
&& GET_CODE (x) != CONST_DOUBLE
&& CONSTANT_P (x)
&& (TARGET_HARD_FLOAT || mode != DFmode)
&& mode != DImode
&& mode != TImode)
&& GET_MODE_NUNITS (mode) == 1
&& (GET_MODE_BITSIZE (mode) <= 32
|| (TARGET_HARD_FLOAT && mode != DFmode)))
{
rtx reg = gen_reg_rtx (Pmode);
emit_insn (gen_elf_high (reg, (x)));

19
gcc/config/rs6000/rs6000.h
View file

@ -1975,16 +1975,15 @@ typedef struct rs6000_args
#define LEGITIMATE_INDIRECT_ADDRESS_P(X, STRICT) \
(GET_CODE (X) == REG && INT_REG_OK_FOR_BASE_P (X, (STRICT)))
#define LEGITIMATE_LO_SUM_ADDRESS_P(MODE, X, STRICT) \
(TARGET_ELF \
&& ! flag_pic && ! TARGET_TOC \
&& (MODE) != DImode \
&& (MODE) != TImode \
&& ! ALTIVEC_VECTOR_MODE (MODE) \
&& (TARGET_HARD_FLOAT || (MODE) != DFmode) \
&& GET_CODE (X) == LO_SUM \
&& GET_CODE (XEXP (X, 0)) == REG \
&& INT_REG_OK_FOR_BASE_P (XEXP (X, 0), (STRICT)) \
#define LEGITIMATE_LO_SUM_ADDRESS_P(MODE, X, STRICT) \
(TARGET_ELF \
&& ! flag_pic && ! TARGET_TOC \
&& GET_MODE_NUNITS (MODE) == 1 \
&& (GET_MODE_BITSIZE (MODE) <= 32 \
|| (TARGET_HARD_FLOAT && (MODE) != DFmode)) \
&& GET_CODE (X) == LO_SUM \
&& GET_CODE (XEXP (X, 0)) == REG \
&& INT_REG_OK_FOR_BASE_P (XEXP (X, 0), (STRICT)) \
&& CONSTANT_P (XEXP (X, 1)))
#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \