From: xuli <xu...@eswincomputing.com>
form 1:
T __attribute__((noinline)) \
sat_u_sub_imm##IMM##_##T##_fmt_1 (T y) \
{ \
return (T)IMM >= y ? (T)IMM - y : 0; \
}
Passed the rv64gcv regression test.
gcc/testsuite/ChangeLog:
* gcc.target/riscv/sat_u_sub_imm-1_3.c: New test.
* gcc.target/riscv/sat_u_sub_imm-2_3.c: New test.
* gcc.target/riscv/sat_u_sub_imm-3_3.c: New test.
* gcc.target/riscv/sat_u_sub_imm-4_1.c: New test.
Change-Id: I3e31b4f2294f6b5da8f52fa6f722126f3b245915
---
.../gcc.target/riscv/sat_u_sub_imm-1_3.c | 21 ++++++++++++++++
.../gcc.target/riscv/sat_u_sub_imm-2_3.c | 23 +++++++++++++++++
.../gcc.target/riscv/sat_u_sub_imm-3_3.c | 25 +++++++++++++++++++
.../gcc.target/riscv/sat_u_sub_imm-4_1.c | 20 +++++++++++++++
4 files changed, 89 insertions(+)
create mode 100644 gcc/testsuite/gcc.target/riscv/sat_u_sub_imm-1_3.c
create mode 100644 gcc/testsuite/gcc.target/riscv/sat_u_sub_imm-2_3.c
create mode 100644 gcc/testsuite/gcc.target/riscv/sat_u_sub_imm-3_3.c
create mode 100644 gcc/testsuite/gcc.target/riscv/sat_u_sub_imm-4_1.c
diff --git a/gcc/testsuite/gcc.target/riscv/sat_u_sub_imm-1_3.c
b/gcc/testsuite/gcc.target/riscv/sat_u_sub_imm-1_3.c
new file mode 100644
index 00000000000..0291bfc3eb2
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/sat_u_sub_imm-1_3.c
@@ -0,0 +1,21 @@
+/* { dg-do compile } */
+/* { dg-skip-if "" { *-*-* } { "-flto" } } */
+/* { dg-options "-march=rv64gc -mabi=lp64d -O3 -fdump-rtl-expand-details
-fno-schedule-insns -fno-schedule-insns2" } */
+/* { dg-final { check-function-bodies "**" "" } } */
+
+#include "sat_arith.h"
+
+/*
+** sat_u_sub_imm254_uint8_t_fmt_1:
+** li\s+[atx][0-9]+,\s*254
+** sub\s+[atx][0-9]+,\s*[atx][0-9]+,\s*a0
+** sltu\s+[atx][0-9]+,\s*[atx][0-9]+,\s*[atx][0-9]+
+** addi\s+a0,\s*a0,\s*-1
+** and\s+a0,\s*a0,\s*[atx][0-9]+
+** andi\s+a0,\s*a0,\s*0xff
+** ret
+*/
+
+DEF_SAT_U_SUB_IMM_FMT_1(uint8_t, 254)
+
+/* { dg-final { scan-rtl-dump-times ".SAT_SUB " 2 "expand" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/sat_u_sub_imm-2_3.c
b/gcc/testsuite/gcc.target/riscv/sat_u_sub_imm-2_3.c
new file mode 100644
index 00000000000..a87c0f8a03f
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/sat_u_sub_imm-2_3.c
@@ -0,0 +1,23 @@
+/* { dg-do compile } */
+/* { dg-skip-if "" { *-*-* } { "-flto" } } */
+/* { dg-options "-march=rv64gc -mabi=lp64d -O3 -fdump-rtl-expand-details
-fno-schedule-insns -fno-schedule-insns2" } */
+/* { dg-final { check-function-bodies "**" "" } } */
+
+#include "sat_arith.h"
+
+/*
+** sat_u_sub_imm65534_uint16_t_fmt_1:
+** li\s+[atx][0-9]+,\s*65536
+** addi\s+[atx][0-9]+,\s*[atx][0-9]+,\s*-2
+** sub\s+[atx][0-9]+,\s*[atx][0-9]+,\s*a0
+** sltu\s+[atx][0-9]+,\s*[atx][0-9]+,\s*[atx][0-9]+
+** addi\s+a0,\s*a0,\s*-1
+** and\s+a0,\s*a0,\s*[atx][0-9]+
+** slli\s+a0,\s*a0,\s*48
+** srli\s+a0,\s*a0,\s*48
+** ret
+*/
+
+DEF_SAT_U_SUB_IMM_FMT_1(uint16_t, 65534)
+
+/* { dg-final { scan-rtl-dump-times ".SAT_SUB " 2 "expand" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/sat_u_sub_imm-3_3.c
b/gcc/testsuite/gcc.target/riscv/sat_u_sub_imm-3_3.c
new file mode 100644
index 00000000000..3a7ff134a9a
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/sat_u_sub_imm-3_3.c
@@ -0,0 +1,25 @@
+/* { dg-do compile } */
+/* { dg-skip-if "" { *-*-* } { "-flto" } } */
+/* { dg-options "-march=rv64gc -mabi=lp64d -O3 -fdump-rtl-expand-details
-fno-schedule-insns -fno-schedule-insns2" } */
+/* { dg-final { check-function-bodies "**" "" } } */
+
+#include "sat_arith.h"
+
+/*
+** sat_u_sub_imm4294967294_uint32_t_fmt_1:
+** li\s+[atx][0-9]+,\s*1
+** slli\s+[atx][0-9]+,\s*[atx][0-9]+,\s*32
+** addi\s+[atx][0-9]+,\s*[atx][0-9]+,\s*-2
+** slli\s+a0,\s*a0,\s*32
+** srli\s+a0,\s*a0,\s*32
+** sub\s+[atx][0-9]+,\s*[atx][0-9]+,\s*a0
+** sltu\s+[atx][0-9]+,\s*[atx][0-9]+,\s*[atx][0-9]+
+** addi\s+a0,\s*a0,\s*-1
+** and\s+a0,\s*a0,\s*[atx][0-9]+
+** sext\.w\s+a0,\s*a0
+** ret
+*/
+
+DEF_SAT_U_SUB_IMM_FMT_1(uint32_t, 4294967294)
+
+/* { dg-final { scan-rtl-dump-times ".SAT_SUB " 2 "expand" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/sat_u_sub_imm-4_1.c
b/gcc/testsuite/gcc.target/riscv/sat_u_sub_imm-4_1.c
new file mode 100644
index 00000000000..98b926c3313
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/sat_u_sub_imm-4_1.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-skip-if "" { *-*-* } { "-flto" } } */
+/* { dg-options "-march=rv64gc -mabi=lp64d -O3 -fdump-rtl-expand-details
-fno-schedule-insns -fno-schedule-insns2" } */
+/* { dg-final { check-function-bodies "**" "" } } */
+
+#include "sat_arith.h"
+
+/*
+** sat_u_sub_imm18446744073709551614u_uint64_t_fmt_1:
+** li\s+[atx][0-9]+,\s*-2
+** sub\s+[atx][0-9]+,\s*[atx][0-9]+,\s*a0
+** sltu\s+[atx][0-9]+,\s*[atx][0-9]+,\s*[atx][0-9]+
+** addi\s+a0,\s*a0,\s*-1
+** and\s+a0,\s*a0,\s*[atx][0-9]+
+** ret
+*/
+
+DEF_SAT_U_SUB_IMM_FMT_1(uint64_t, 18446744073709551614u)
+
+/* { dg-final { scan-rtl-dump-times ".SAT_SUB " 2 "expand" } } */
--
2.17.1
