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Fix unary negation (-)

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This commit is contained in:
Dale Weiler 2015-12-28 07:58:54 -05:00
parent e922403aa8
commit 6024e377ba
3 changed files with 8 additions and 9 deletions
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2
exec.c
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@ -667,7 +667,7 @@ static qcvm_parameter *main_params = NULL;
if (prog->argc != (num)) { \
prog->vmerror++; \
fprintf(stderr, "ERROR: invalid number of arguments for %s: %i, expected %i\n", \
__FUNCTION__, prog->argc, (num)); \
__func__, prog->argc, (num)); \
return -1; \
} \
} while (0)

2
include.mk
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@ -6,7 +6,7 @@ DATADIR := $(PREFIX)/share
MANDIR := $(DATADIR)/man
# default flags
CFLAGS += -Wall -Wextra -Werror -Wstrict-aliasing -Wno-attributes -O2
CFLAGS += -Wall -Wextra -Werror -Wstrict-aliasing -Wno-attributes -g3
# compiler
CC ?= clang

13
ir.c
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@ -1917,6 +1917,9 @@ ir_value* ir_block_create_unary(ir_block *self, lex_ctx_t ctx,
ir_value *operand)
{
int ot = TYPE_FLOAT;
ir_value *minus_1 = NULL;
if (opcode == VINSTR_NEG_F || opcode == VINSTR_NEG_V)
minus_1 = ir_builder_imm_float(self->owner->owner, -1.0f, false);
switch (opcode) {
case INSTR_NOT_F:
case INSTR_NOT_V:
@ -1926,15 +1929,11 @@ ir_value* ir_block_create_unary(ir_block *self, lex_ctx_t ctx,
case INSTR_NOT_I: */
ot = TYPE_FLOAT;
break;
/*
* Negation for virtual instructions is emulated with 0-value. Thankfully
* the operand for 0 already exists so we just source it from here.
*/
/* Negation is implemented as -1 * <operand> */
case VINSTR_NEG_F:
return ir_block_create_general_instr(self, ctx, label, INSTR_SUB_F, NULL, operand, ot);
return ir_block_create_general_instr(self, ctx, label, INSTR_MUL_F, minus_1, operand, TYPE_FLOAT);
case VINSTR_NEG_V:
return ir_block_create_general_instr(self, ctx, label, INSTR_SUB_V, NULL, operand, TYPE_VECTOR);
return ir_block_create_general_instr(self, ctx, label, INSTR_MUL_FV, minus_1, operand, TYPE_VECTOR);
default:
ot = operand->vtype;