RISC-V/testsuite: Add branchless cases for GEU and LEU cond-move operations

Verify, for Ventana and Zicond targets and the GEU and LEU
conditional-move operations, that if-conversion triggers via
`noce_try_cmove' at `-mbranch-cost=4' setting, which makes branchless
code sequences produced by if-conversion cheaper than their original
branched equivalents, and that extraneous instructions such as SEQZ,
etc. are not present in output.

	gcc/testsuite/
	* gcc.target/riscv/movdigtu-ventana.c: New test.
	* gcc.target/riscv/movdigtu-zicond.c: New test.
	* gcc.target/riscv/movdiltu-ventana.c: New test.
	* gcc.target/riscv/movdiltu-zicond.c: New test.
	* gcc.target/riscv/movsigtu-ventana.c: New test.
	* gcc.target/riscv/movsigtu-zicond.c: New test.
	* gcc.target/riscv/movsiltu-ventana.c: New test.
	* gcc.target/riscv/movsiltu-zicond.c: New test.

8 files changed, 224 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.target/riscv/movdigtu-ventana.c b/gcc/testsuite/gcc.target/riscv/movdigtu-ventana.c
new file mode 100644
index 0000000..d34314d
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/movdigtu-ventana.c
@@ -0,0 +1,28 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target rv64 } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv64gc_xventanacondops -mtune=rocket -mbranch-cost=4 -fdump-rtl-ce1" } */
+
+typedef unsigned int __attribute__ ((mode (DI))) int_t;
+
+int_t
+movdigtu (int_t w, int_t x, int_t y, int_t z)
+{
+  return w > x ? y : z;
+}
+
+/* Expect branchless assembly like:
+
+	sgtu	a1,a0,a1
+	vt.maskcn	a3,a3,a1
+	vt.maskc	a1,a2,a1
+	or	a0,a1,a3
+ */
+
+/* { dg-final { scan-rtl-dump-times "Conversion succeeded on pass 1\\." 1 "ce1" } } */
+/* { dg-final { scan-rtl-dump-times "if-conversion succeeded through noce_try_cmove" 1 "ce1" } } */
+/* { dg-final { scan-assembler-times "\\s(?:sgtu|sltu)\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\svt\\.maskc\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\svt\\.maskcn\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
+/* { dg-final { scan-assembler-not "\\s(?:bgeu|bgtu|bleu|bltu)\\s" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/movdigtu-zicond.c b/gcc/testsuite/gcc.target/riscv/movdigtu-zicond.c
new file mode 100644
index 0000000..61a0c14
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/movdigtu-zicond.c
@@ -0,0 +1,28 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target rv64 } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv64gc_zicond -mtune=rocket -mbranch-cost=4 -fdump-rtl-ce1" } */
+
+typedef unsigned int __attribute__ ((mode (DI))) int_t;
+
+int_t
+movdigtu (int_t w, int_t x, int_t y, int_t z)
+{
+  return w > x ? y : z;
+}
+
+/* Expect branchless assembly like:
+
+	sgtu	a1,a0,a1
+	czero.nez	a3,a3,a1
+	czero.eqz	a1,a2,a1
+	or	a0,a1,a3
+ */
+
+/* { dg-final { scan-rtl-dump-times "Conversion succeeded on pass 1\\." 1 "ce1" } } */
+/* { dg-final { scan-rtl-dump-times "if-conversion succeeded through noce_try_cmove" 1 "ce1" } } */
+/* { dg-final { scan-assembler-times "\\s(?:sgtu|sltu)\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\sczero\\.eqz\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\sczero\\.nez\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
+/* { dg-final { scan-assembler-not "\\s(?:bgeu|bgtu|bleu|bltu)\\s" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/movdiltu-ventana.c b/gcc/testsuite/gcc.target/riscv/movdiltu-ventana.c
new file mode 100644
index 0000000..23f2572
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/movdiltu-ventana.c
@@ -0,0 +1,28 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target rv64 } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv64gc_xventanacondops -mtune=rocket -mbranch-cost=4 -fdump-rtl-ce1" } */
+
+typedef unsigned int __attribute__ ((mode (DI))) int_t;
+
+int_t
+movdiltu (int_t w, int_t x, int_t y, int_t z)
+{
+  return w < x ? y : z;
+}
+
+/* Expect branchless assembly like:
+
+	sltu	a1,a0,a1
+	vt.maskcn	a3,a3,a1
+	vt.maskc	a1,a2,a1
+	or	a0,a1,a3
+ */
+
+/* { dg-final { scan-rtl-dump-times "Conversion succeeded on pass 1\\." 1 "ce1" } } */
+/* { dg-final { scan-rtl-dump-times "if-conversion succeeded through noce_try_cmove" 1 "ce1" } } */
+/* { dg-final { scan-assembler-times "\\s(?:sgtu|sltu)\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\svt\\.maskc\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\svt\\.maskcn\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
+/* { dg-final { scan-assembler-not "\\s(?:bgeu|bgtu|bleu|bltu)\\s" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/movdiltu-zicond.c b/gcc/testsuite/gcc.target/riscv/movdiltu-zicond.c
new file mode 100644
index 0000000..641bfb1
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/movdiltu-zicond.c
@@ -0,0 +1,28 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target rv64 } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv64gc_zicond -mtune=rocket -mbranch-cost=4 -fdump-rtl-ce1" } */
+
+typedef unsigned int __attribute__ ((mode (DI))) int_t;
+
+int_t
+movdiltu (int_t w, int_t x, int_t y, int_t z)
+{
+  return w < x ? y : z;
+}
+
+/* Expect branchless assembly like:
+
+	sltu	a1,a0,a1
+	czero.nez	a3,a3,a1
+	czero.eqz	a1,a2,a1
+	or	a0,a1,a3
+ */
+
+/* { dg-final { scan-rtl-dump-times "Conversion succeeded on pass 1\\." 1 "ce1" } } */
+/* { dg-final { scan-rtl-dump-times "if-conversion succeeded through noce_try_cmove" 1 "ce1" } } */
+/* { dg-final { scan-assembler-times "\\s(?:sgtu|sltu)\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\sczero\\.eqz\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\sczero\\.nez\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
+/* { dg-final { scan-assembler-not "\\s(?:bgeu|bgtu|bleu|bltu)\\s" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/movsigtu-ventana.c b/gcc/testsuite/gcc.target/riscv/movsigtu-ventana.c
new file mode 100644
index 0000000..73a8c53
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/movsigtu-ventana.c
@@ -0,0 +1,28 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target rv64 } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv64gc_xventanacondops -mtune=rocket -mbranch-cost=4 -fdump-rtl-ce1" } */
+
+typedef unsigned int __attribute__ ((mode (SI))) int_t;
+
+int_t
+movsigtu (int_t w, int_t x, int_t y, int_t z)
+{
+  return w > x ? y : z;
+}
+
+/* Expect branchless assembly like:
+
+	sgtu	a1,a0,a1
+	vt.maskcn	a3,a3,a1
+	vt.maskc	a1,a2,a1
+	or	a0,a1,a3
+ */
+
+/* { dg-final { scan-rtl-dump-times "Conversion succeeded on pass 1\\." 1 "ce1" } } */
+/* { dg-final { scan-rtl-dump-times "if-conversion succeeded through noce_try_cmove" 1 "ce1" } } */
+/* { dg-final { scan-assembler-times "\\s(?:sgtu|sltu)\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\svt\\.maskc\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\svt\\.maskcn\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
+/* { dg-final { scan-assembler-not "\\s(?:bgeu|bgtu|bleu|bltu)\\s" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/movsigtu-zicond.c b/gcc/testsuite/gcc.target/riscv/movsigtu-zicond.c
new file mode 100644
index 0000000..a42578d
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/movsigtu-zicond.c
@@ -0,0 +1,28 @@
+/* { dg-do compile } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv64gc_zicond -mtune=rocket -mbranch-cost=4 -fdump-rtl-ce1" { target { rv64 } } } */
+/* { dg-options "-march=rv32gc_zicond -mtune=rocket -mbranch-cost=4 -fdump-rtl-ce1" { target { rv32 } } } */
+
+typedef unsigned int __attribute__ ((mode (SI))) int_t;
+
+int_t
+movsigtu (int_t w, int_t x, int_t y, int_t z)
+{
+  return w > x ? y : z;
+}
+
+/* Expect branchless assembly like:
+
+	sgtu	a1,a0,a1
+	czero.nez	a3,a3,a1
+	czero.eqz	a1,a2,a1
+	or	a0,a1,a3
+ */
+
+/* { dg-final { scan-rtl-dump-times "Conversion succeeded on pass 1\\." 1 "ce1" } } */
+/* { dg-final { scan-rtl-dump-times "if-conversion succeeded through noce_try_cmove" 1 "ce1" } } */
+/* { dg-final { scan-assembler-times "\\s(?:sgtu|sltu)\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\sczero\\.eqz\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\sczero\\.nez\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
+/* { dg-final { scan-assembler-not "\\s(?:bgeu|bgtu|bleu|bltu)\\s" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/movsiltu-ventana.c b/gcc/testsuite/gcc.target/riscv/movsiltu-ventana.c
new file mode 100644
index 0000000..05ee813
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/movsiltu-ventana.c
@@ -0,0 +1,28 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target rv64 } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv64gc_xventanacondops -mtune=rocket -mbranch-cost=4 -fdump-rtl-ce1" } */
+
+typedef unsigned int __attribute__ ((mode (SI))) int_t;
+
+int_t
+movsiltu (int_t w, int_t x, int_t y, int_t z)
+{
+  return w < x ? y : z;
+}
+
+/* Expect branchless assembly like:
+
+	sltu	a1,a0,a1
+	vt.maskcn	a3,a3,a1
+	vt.maskc	a1,a2,a1
+	or	a0,a1,a3
+ */
+
+/* { dg-final { scan-rtl-dump-times "Conversion succeeded on pass 1\\." 1 "ce1" } } */
+/* { dg-final { scan-rtl-dump-times "if-conversion succeeded through noce_try_cmove" 1 "ce1" } } */
+/* { dg-final { scan-assembler-times "\\s(?:sgtu|sltu)\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\svt\\.maskc\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\svt\\.maskcn\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
+/* { dg-final { scan-assembler-not "\\s(?:bgeu|bgtu|bleu|bltu)\\s" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/movsiltu-zicond.c b/gcc/testsuite/gcc.target/riscv/movsiltu-zicond.c
new file mode 100644
index 0000000..79e7850
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/movsiltu-zicond.c
@@ -0,0 +1,28 @@
+/* { dg-do compile } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv64gc_zicond -mtune=rocket -mbranch-cost=4 -fdump-rtl-ce1" { target { rv64 } } } */
+/* { dg-options "-march=rv32gc_zicond -mtune=rocket -mbranch-cost=4 -fdump-rtl-ce1" { target { rv32 } } } */
+
+typedef unsigned int __attribute__ ((mode (SI))) int_t;
+
+int_t
+movsiltu (int_t w, int_t x, int_t y, int_t z)
+{
+  return w < x ? y : z;
+}
+
+/* Expect branchless assembly like:
+
+	sltu	a1,a0,a1
+	czero.nez	a3,a3,a1
+	czero.eqz	a1,a2,a1
+	or	a0,a1,a3
+ */
+
+/* { dg-final { scan-rtl-dump-times "Conversion succeeded on pass 1\\." 1 "ce1" } } */
+/* { dg-final { scan-rtl-dump-times "if-conversion succeeded through noce_try_cmove" 1 "ce1" } } */
+/* { dg-final { scan-assembler-times "\\s(?:sgtu|sltu)\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\sczero\\.eqz\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\sczero\\.nez\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
+/* { dg-final { scan-assembler-not "\\s(?:bgeu|bgtu|bleu|bltu)\\s" } } */