1 From f91770216eade83f068528c1e4f00e2ac3b23044 Mon Sep 17 00:00:00 2001
2 From: Martin Liska <mliska@suse.cz>
3 Date: Thu, 13 Aug 2020 09:38:41 +0200
4 Subject: [PATCH] ipa: fix ICE in get_default_value
6 The patch aligns code with ipcp_bits_lattice::set_to_constant
7 where we properly mask m_value with m_mask. The same should
13 * ipa-cp.c (ipcp_bits_lattice::meet_with_1): Mask m_value
16 gcc/testsuite/ChangeLog:
19 * gcc.dg/ipa/pr96482-2.c: New test.
22 gcc/testsuite/gcc.dg/ipa/pr96482-2.c | 33 ++++++++++++++++++++++++++++
23 2 files changed, 34 insertions(+), 1 deletion(-)
24 create mode 100644 gcc/testsuite/gcc.dg/ipa/pr96482-2.c
26 diff --git a/gcc/ipa-cp.c b/gcc/ipa-cp.c
27 index 2b21280d919..e4910a04ffa 100644
30 @@ -1048,7 +1048,7 @@ ipcp_bits_lattice::meet_with_1 (widest_int value, widest_int mask,
32 widest_int old_mask = m_mask;
33 m_mask = (m_mask | mask) | (m_value ^ value);
37 if (wi::sext (m_mask, precision) == -1)
38 return set_to_bottom ();
39 diff --git a/gcc/testsuite/gcc.dg/ipa/pr96482-2.c b/gcc/testsuite/gcc.dg/ipa/pr96482-2.c
41 index 00000000000..54b71ac4fc0
43 +++ b/gcc/testsuite/gcc.dg/ipa/pr96482-2.c
46 +/* { dg-do compile } */
47 +/* { dg-options "-O2" } */
55 +} wdt87xx_i2c_xfer_client;
57 +int wdt87xx_i2c_xfer_client_0, wdt87xx_i2c_xfer_rxdata, wdt87xx_get_string_str_idx;
60 +static wdt87xx_i2c_xfer(void *txdata, unsigned rxlen) {
61 + struct i2c_msg msgs[] = {wdt87xx_i2c_xfer_client_0, rxlen,
62 + wdt87xx_i2c_xfer_rxdata};
63 + int error = i2c_transfer(wdt87xx_i2c_xfer_client, msgs);
64 + _dev_err("", __func__, error);
66 +static void wdt87xx_get_string(unsigned len) {
67 + char tx_buf[] = {wdt87xx_get_string_str_idx, 3};
68 + int rx_len = len + 2;
69 + wdt87xx_i2c_xfer(tx_buf, rx_len);
73 +wdt87xx_ts_probe_tx_buf() {
74 + wdt87xx_get_string(34);
75 + wdt87xx_get_string(8);
76 + wdt87xx_i2c_xfer(wdt87xx_ts_probe_tx_buf, 2);