From 4d1a883835b28085e2d6e6a13c4745680e4f2ef6 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Sun, 23 Oct 2011 21:51:16 +0000 Subject: Fix sparc so that reload doesn't try to load non-trivial vector consts directly. * config/sparc/predicates.md (input_operand): Disallow vector constants other than 0 and -1. * config/sparc/sparc.c (sparc_preferred_reload_class): Return NO_REGS for vector constants other than 0 and -1. From-SVN: r180351 --- gcc/config/sparc/predicates.md | 8 ++++++-- gcc/config/sparc/sparc.c | 15 ++++++++++++--- 2 files changed, 18 insertions(+), 5 deletions(-) (limited to 'gcc/config/sparc') diff --git a/gcc/config/sparc/predicates.md b/gcc/config/sparc/predicates.md index f0be149..4dd734f 100644 --- a/gcc/config/sparc/predicates.md +++ b/gcc/config/sparc/predicates.md @@ -427,8 +427,12 @@ && (GET_CODE (op) == CONST_DOUBLE || GET_CODE (op) == CONST_INT)) return true; - if ((mclass == MODE_FLOAT && GET_CODE (op) == CONST_DOUBLE) - || (mclass == MODE_VECTOR_INT && GET_CODE (op) == CONST_VECTOR)) + if (mclass == MODE_FLOAT && GET_CODE (op) == CONST_DOUBLE) + return true; + + if (mclass == MODE_VECTOR_INT && GET_CODE (op) == CONST_VECTOR + && (const_zero_operand (op, mode) + || const_all_ones_operand (op, mode))) return true; if (register_operand (op, mode)) diff --git a/gcc/config/sparc/sparc.c b/gcc/config/sparc/sparc.c index 415ece8..df0d825 100644 --- a/gcc/config/sparc/sparc.c +++ b/gcc/config/sparc/sparc.c @@ -11116,17 +11116,26 @@ sparc_conditional_register_usage (void) static reg_class_t sparc_preferred_reload_class (rtx x, reg_class_t rclass) { + enum machine_mode mode = GET_MODE (x); if (CONSTANT_P (x)) { if (FP_REG_CLASS_P (rclass) || rclass == GENERAL_OR_FP_REGS || rclass == GENERAL_OR_EXTRA_FP_REGS - || (GET_MODE_CLASS (GET_MODE (x)) == MODE_FLOAT && ! TARGET_FPU) - || (GET_MODE (x) == TFmode && ! const_zero_operand (x, TFmode))) + || (GET_MODE_CLASS (mode) == MODE_FLOAT && ! TARGET_FPU) + || (mode == TFmode && ! const_zero_operand (x, mode))) return NO_REGS; - if (GET_MODE_CLASS (GET_MODE (x)) == MODE_INT) + if (GET_MODE_CLASS (mode) == MODE_INT) return GENERAL_REGS; + + if (GET_MODE_CLASS (mode) == MODE_VECTOR_INT) + { + if (! FP_REG_CLASS_P (rclass) + || !(const_zero_operand (x, mode) + || const_all_ones_operand (x, mode))) + return NO_REGS; + } } return rclass; -- cgit v1.1