From d6f1961e68092fda35ce064ef45d1dbec780c624 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Tue, 14 Jan 2025 22:11:13 -0700 Subject: [RISC-V][PR target/118170] Add HF div/sqrt reservation Clearly an oversight in the generic-ooo model caught by the checking code. I should have realized it was generic-ooo as we don't have a pipeline description for the tenstorrent design yet, just the costing model. The patch was extracted from the BZ which indicated Anton was the author, so I kept that. I'm listed as co-author just in case someone wants to complain about the testcase in the future. I didn't do any notable lifting here. Thanks Peter and Anton! PR target/118170 gcc/ * config/riscv/generic-ooo.md (generic_ooo_float_div_half): New reservation. gcc/testsuite * gcc.target/riscv/pr118170.c: New test. Co-authored-by: Jeff Law --- gcc/config/riscv/generic-ooo.md | 6 ++++++ gcc/testsuite/gcc.target/riscv/pr118170.c | 9 +++++++++ 2 files changed, 15 insertions(+) create mode 100644 gcc/testsuite/gcc.target/riscv/pr118170.c (limited to 'gcc') diff --git a/gcc/config/riscv/generic-ooo.md b/gcc/config/riscv/generic-ooo.md index 6cf3463..ae9430e 100644 --- a/gcc/config/riscv/generic-ooo.md +++ b/gcc/config/riscv/generic-ooo.md @@ -145,6 +145,12 @@ "generic_ooo_issue,generic_ooo_fxu") ;; Assume float division and sqrt are not pipelined. +(define_insn_reservation "generic_ooo_float_div_half" 10 + (and (eq_attr "tune" "generic_ooo") + (and (eq_attr "type" "fdiv,fsqrt") + (eq_attr "mode" "HF"))) + "generic_ooo_issue,generic_ooo_fxu,generic_ooo_div,generic_ooo_div*3") + (define_insn_reservation "generic_ooo_float_div_single" 12 (and (eq_attr "tune" "generic_ooo") (and (eq_attr "type" "fdiv,fsqrt") diff --git a/gcc/testsuite/gcc.target/riscv/pr118170.c b/gcc/testsuite/gcc.target/riscv/pr118170.c new file mode 100644 index 0000000..306ff88 --- /dev/null +++ b/gcc/testsuite/gcc.target/riscv/pr118170.c @@ -0,0 +1,9 @@ +/* { dg-do "compile" } */ +/* { dg-options "-O2 -mcpu=tt-ascalon-d8" } */ +_Float16 f; + +void +foo () +{ + f /= 3; +} -- cgit v1.1