From 07c0f65385b94bbc8efc398ff82edd05953e39c2 Mon Sep 17 00:00:00 2001 From: Taylor Simpson Date: Tue, 1 Jun 2021 18:19:41 -0500 Subject: [PATCH] Hexagon (target/hexagon) fix bug in fLSBNEW* Change fLSBNEW/fLSBNEW0/fLSBNEW1 from copy to "x & 1" Remove gen_logical_not function Clean up fLSBNEWNOT to use andi-1 followed by xori-1 Test cases added to tests/tcg/hexagon/misc.c Signed-off-by: Taylor Simpson Reviewed-by: Richard Henderson Message-Id: <1622589584-22571-2-git-send-email-tsimpson@quicinc.com> --- target/hexagon/macros.h | 27 ++++++++++---------------- target/hexagon/op_helper.c | 5 ----- tests/tcg/hexagon/misc.c | 39 +++++++++++++++++++++++++++++++++++++- 3 files changed, 48 insertions(+), 23 deletions(-) diff --git a/target/hexagon/macros.h b/target/hexagon/macros.h index b726c3b791..2b208f3a21 100644 --- a/target/hexagon/macros.h +++ b/target/hexagon/macros.h @@ -239,33 +239,26 @@ static inline void gen_pred_cancel(TCGv pred, int slot_num) #endif #ifdef QEMU_GENERATE -#define fLSBNEW(PVAL) tcg_gen_mov_tl(LSB, (PVAL)) -#define fLSBNEW0 tcg_gen_mov_tl(LSB, hex_new_pred_value[0]) -#define fLSBNEW1 tcg_gen_mov_tl(LSB, hex_new_pred_value[1]) +#define fLSBNEW(PVAL) tcg_gen_andi_tl(LSB, (PVAL), 1) +#define fLSBNEW0 tcg_gen_andi_tl(LSB, hex_new_pred_value[0], 1) +#define fLSBNEW1 tcg_gen_andi_tl(LSB, hex_new_pred_value[1], 1) #else -#define fLSBNEW(PVAL) (PVAL) -#define fLSBNEW0 new_pred_value(env, 0) -#define fLSBNEW1 new_pred_value(env, 1) +#define fLSBNEW(PVAL) ((PVAL) & 1) +#define fLSBNEW0 (env->new_pred_value[0] & 1) +#define fLSBNEW1 (env->new_pred_value[1] & 1) #endif #ifdef QEMU_GENERATE -static inline void gen_logical_not(TCGv dest, TCGv src) -{ - TCGv one = tcg_const_tl(1); - TCGv zero = tcg_const_tl(0); - - tcg_gen_movcond_tl(TCG_COND_NE, dest, src, zero, zero, one); - - tcg_temp_free(one); - tcg_temp_free(zero); -} #define fLSBOLDNOT(VAL) \ do { \ tcg_gen_andi_tl(LSB, (VAL), 1); \ tcg_gen_xori_tl(LSB, LSB, 1); \ } while (0) #define fLSBNEWNOT(PNUM) \ - gen_logical_not(LSB, (PNUM)) + do { \ + tcg_gen_andi_tl(LSB, (PNUM), 1); \ + tcg_gen_xori_tl(LSB, LSB, 1); \ + } while (0) #else #define fLSBNEWNOT(PNUM) (!fLSBNEW(PNUM)) #define fLSBOLDNOT(VAL) (!fLSBOLD(VAL)) diff --git a/target/hexagon/op_helper.c b/target/hexagon/op_helper.c index 63dd685658..459555966d 100644 --- a/target/hexagon/op_helper.c +++ b/target/hexagon/op_helper.c @@ -128,11 +128,6 @@ void HELPER(debug_start_packet)(CPUHexagonState *env) } } -static int32_t new_pred_value(CPUHexagonState *env, int pnum) -{ - return env->new_pred_value[pnum]; -} - /* Checks for bookkeeping errors between disassembly context and runtime */ void HELPER(debug_check_store_width)(CPUHexagonState *env, int slot, int check) { diff --git a/tests/tcg/hexagon/misc.c b/tests/tcg/hexagon/misc.c index 17c39198fc..9e139f3e85 100644 --- a/tests/tcg/hexagon/misc.c +++ b/tests/tcg/hexagon/misc.c @@ -181,6 +181,19 @@ static inline void S4_storeirifnew_io(void *p, int pred) : "p0", "memory"); } +static int L2_ploadrifnew_pi(void *p, int pred) +{ + int result; + asm volatile("%0 = #31\n\t" + "{\n\t" + " p0 = cmp.eq(%1, #1)\n\t" + " if (!p0.new) %0 = memw(%2++#4)\n\t" + "}\n\t" + : "=r"(result) : "r"(pred), "r"(p) + : "p0"); + return result; +} + /* * Test that compound-compare-jump is executed in 2 parts * First we have to do all the compares in the packet and @@ -298,8 +311,24 @@ static int auto_and(void) return retval; } +void test_lsbnew(void) +{ + int result; + + asm("r0 = #2\n\t" + "r1 = #5\n\t" + "{\n\t" + " p0 = r0\n\t" + " if (p0.new) r1 = #3\n\t" + "}\n\t" + "%0 = r1\n\t" + : "=r"(result) :: "r0", "r1", "p0"); + check(result, 5); +} + int main() { + int res; long long res64; int pred; @@ -394,6 +423,12 @@ int main() S4_storeirifnew_io(&array[8], 1); check(array[9], 9); + memcpy(array, init, sizeof(array)); + res = L2_ploadrifnew_pi(&array[6], 0); + check(res, 6); + res = L2_ploadrifnew_pi(&array[7], 1); + check(res, 31); + int x = cmpnd_cmp_jump(); check(x, 12); @@ -406,7 +441,7 @@ int main() check((int)pair, 5); check((int)(pair >> 32), 7); - int res = test_clrtnew(1, 7); + res = test_clrtnew(1, 7); check(res, 0); res = test_clrtnew(2, 7); check(res, 7); @@ -422,6 +457,8 @@ int main() res = auto_and(); check(res, 0); + test_lsbnew(); + puts(err ? "FAIL" : "PASS"); return err; }