diff --git a/gcc/config/bpf/bpf.md b/gcc/config/bpf/bpf.md index 769d8ea0096..8e7cf508ccf 100644 --- a/gcc/config/bpf/bpf.md +++ b/gcc/config/bpf/bpf.md @@ -165,6 +165,16 @@ "div\t%0,%2" [(set_attr "type" "")]) +;; However, xBPF does provide a signed division operator, sdiv. + +(define_insn "div3" + [(set (match_operand:AM 0 "register_operand" "=r,r") + (div:AM (match_operand:AM 1 "register_operand" " 0,0") + (match_operand:AM 2 "reg_or_imm_operand" "r,I")))] + "TARGET_XBPF" + "sdiv\t%0,%2" + [(set_attr "type" "")]) + ;;; Modulus ;; Note that eBPF doesn't provide instructions for signed integer @@ -178,6 +188,16 @@ "mod\t%0,%2" [(set_attr "type" "")]) +;; Again, xBPF provides a signed version, smod. + +(define_insn "mod3" + [(set (match_operand:AM 0 "register_operand" "=r,r") + (mod:AM (match_operand:AM 1 "register_operand" " 0,0") + (match_operand:AM 2 "reg_or_imm_operand" "r,I")))] + "TARGET_XBPF" + "smod\t%0,%2" + [(set_attr "type" "")]) + ;;; Logical AND (define_insn "and3" [(set (match_operand:AM 0 "register_operand" "=r,r") diff --git a/gcc/testsuite/gcc.target/bpf/diag-sdiv.c b/gcc/testsuite/gcc.target/bpf/diag-sdiv.c new file mode 100644 index 00000000000..db0c494a789 --- /dev/null +++ b/gcc/testsuite/gcc.target/bpf/diag-sdiv.c @@ -0,0 +1,12 @@ +/* Verify signed division does not produce 'sdiv' insn in eBPF. */ +/* { dg-do compile } */ +/* { dg-options "-O0" } */ + +void +foo () +{ + signed int x = 5; + signed int y = 2; + signed int z = x / y; +} +/* { dg-final { scan-assembler-not "sdiv(32)?\t%r" } } */ diff --git a/gcc/testsuite/gcc.target/bpf/diag-smod.c b/gcc/testsuite/gcc.target/bpf/diag-smod.c new file mode 100644 index 00000000000..20234ee39cc --- /dev/null +++ b/gcc/testsuite/gcc.target/bpf/diag-smod.c @@ -0,0 +1,12 @@ +/* Verify signed modulo does not produce 'smod' insn in eBPF. */ +/* { dg-do compile } */ +/* { dg-options "-O0" } */ + +void +foo () +{ + signed int x = 5; + signed int y = 2; + signed int z = x % y; +} +/* { dg-final { scan-assembler-not "smod(32)?\t%r" } } */ diff --git a/gcc/testsuite/gcc.target/bpf/xbpf-sdiv-1.c b/gcc/testsuite/gcc.target/bpf/xbpf-sdiv-1.c new file mode 100644 index 00000000000..f6c5c9e9f1c --- /dev/null +++ b/gcc/testsuite/gcc.target/bpf/xbpf-sdiv-1.c @@ -0,0 +1,14 @@ +/* Verify that sdiv instruction is used for xBPF. */ +/* { dg-do compile } */ +/* { dg-options "-O0 -mxbpf" } */ + +void +foo () +{ + signed int x = 5; + signed int y = 2; + signed int z = x / y; + signed int w = x / 3; +} + +/* { dg-final { scan-assembler "sdiv(32)?\t%r" } } */ diff --git a/gcc/testsuite/gcc.target/bpf/xbpf-smod-1.c b/gcc/testsuite/gcc.target/bpf/xbpf-smod-1.c new file mode 100644 index 00000000000..b3e5816b5cf --- /dev/null +++ b/gcc/testsuite/gcc.target/bpf/xbpf-smod-1.c @@ -0,0 +1,14 @@ +/* Verify that smod instruction is used for xBPF. */ +/* { dg-do compile } */ +/* { dg-options "-O0 -mxbpf" } */ + +void +foo () +{ + signed int x = 5; + signed int y = 2; + signed int z = x % y; + signed int w = x % 3; +} + +/* { dg-final { scan-assembler "smod(32)?\t%r" } } */