motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-12-17 21:26:13 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions

tcg: Merge INDEX_op_shr_{i32,i64}

Browse source 
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2025-01-07 22:52:10 -08:00
parent edd6ba8a6b
commit 74dbd36f1f
7 changed files with 18 additions and 29 deletions
Download patch file Download diff file Expand all files Collapse all files

17
tcg/optimize.c
View file

@ -452,10 +452,10 @@ static uint64_t do_constant_folding_2(TCGOpcode op, TCGType type,
}
return (uint64_t)x << (y & 63);
case INDEX_op_shr_i32:
return (uint32_t)x >> (y & 31);
case INDEX_op_shr_i64:
case INDEX_op_shr:
if (type == TCG_TYPE_I32) {
return (uint32_t)x >> (y & 31);
}
return (uint64_t)x >> (y & 63);
case INDEX_op_sar_i32:
@ -2342,7 +2342,6 @@ static int fold_setcond_zmask(OptContext *ctx, TCGOp *op, bool neg)
static void fold_setcond_tst_pow2(OptContext *ctx, TCGOp *op, bool neg)
{
TCGOpcode shr_opc;
TCGOpcode uext_opc = 0, sext_opc = 0;
TCGCond cond = op->args[3];
TCGArg ret, src1, src2;
@ -2364,7 +2363,6 @@ static void fold_setcond_tst_pow2(OptContext *ctx, TCGOp *op, bool neg)
switch (ctx->type) {
case TCG_TYPE_I32:
shr_opc = INDEX_op_shr_i32;
if (TCG_TARGET_extract_valid(TCG_TYPE_I32, sh, 1)) {
uext_opc = INDEX_op_extract_i32;
}
@ -2373,7 +2371,6 @@ static void fold_setcond_tst_pow2(OptContext *ctx, TCGOp *op, bool neg)
}
break;
case TCG_TYPE_I64:
shr_opc = INDEX_op_shr_i64;
if (TCG_TARGET_extract_valid(TCG_TYPE_I64, sh, 1)) {
uext_opc = INDEX_op_extract_i64;
}
@ -2402,7 +2399,7 @@ static void fold_setcond_tst_pow2(OptContext *ctx, TCGOp *op, bool neg)
op->args[3] = 1;
} else {
if (sh) {
op2 = opt_insert_before(ctx, op, shr_opc, 3);
op2 = opt_insert_before(ctx, op, INDEX_op_shr, 3);
op2->args[0] = ret;
op2->args[1] = src1;
op2->args[2] = arg_new_constant(ctx, sh);
@ -2609,7 +2606,7 @@ static bool fold_shift(OptContext *ctx, TCGOp *op)
* input sign repetitions.
*/
return fold_masks_s(ctx, op, s_mask);
CASE_OP_32_64(shr):
case INDEX_op_shr:
/*
* If the sign bit is known zero, then logical right shift
* will not reduce the number of input sign repetitions.
@ -3032,7 +3029,7 @@ void tcg_optimize(TCGContext *s)
CASE_OP_32_64(rotr):
CASE_OP_32_64(sar):
case INDEX_op_shl:
CASE_OP_32_64(shr):
case INDEX_op_shr:
done = fold_shift(&ctx, op);
break;
CASE_OP_32_64(setcond):