RISC-V/testsuite: Add branched cases for generic FP cond moves

Verify, for generic floating-point conditional-move operations that have
a corresponding conditional-set machine instruction, that if-conversion
does *not* trigger at `-mbranch-cost=4' setting, which makes original
branched code sequences cheaper than their branchless equivalents
if-conversion would emit.  Cover all the relevant floating-point
relational operations to make sure no corner case escapes.

	gcc/testsuite/
	* gcc.target/riscv/movdibfge.c: New test.
	* gcc.target/riscv/movdibfgt.c: New test.
	* gcc.target/riscv/movdibfle.c: New test.
	* gcc.target/riscv/movdibflt.c: New test.
	* gcc.target/riscv/movdibfne.c: New test.
	* gcc.target/riscv/movsibfge.c: New test.
	* gcc.target/riscv/movsibfgt.c: New test.
	* gcc.target/riscv/movsibfle.c: New test.
	* gcc.target/riscv/movsibflt.c: New test.
	* gcc.target/riscv/movsibfne.c: New test.

10 files changed, 280 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.target/riscv/movdibfge.c b/gcc/testsuite/gcc.target/riscv/movdibfge.c
new file mode 100644
index 0000000..68dacb6
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/movdibfge.c
@@ -0,0 +1,28 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target rv64 } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv64gc -mtune=sifive-5-series -mbranch-cost=4 -mmovcc -fdump-rtl-ce1" } */
+
+typedef int __attribute__ ((mode (DI))) int_t;
+
+int_t
+movdifge (double w, double x, int_t y, int_t z)
+{
+  return w >= x ? y : z;
+}
+
+/* Expect branched assembly like:
+
+	fge.d	a4,fa0,fa1
+	mv	a5,a0
+	mv	a0,a1
+	beq	a4,zero,.L2
+	mv	a0,a5
+.L2:
+ */
+
+/* { dg-final { scan-rtl-dump-not "Conversion succeeded on pass \[0-9\]+\\." "ce1" } } */
+/* { dg-final { scan-rtl-dump-not "if-conversion succeeded through" "ce1" } } */
+/* { dg-final { scan-assembler-times "\\s(?:fge\\.d|fle\\.d)\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\s(?:beq|bne)\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/movdibfgt.c b/gcc/testsuite/gcc.target/riscv/movdibfgt.c
new file mode 100644
index 0000000..dbd60d7
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/movdibfgt.c
@@ -0,0 +1,28 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target rv64 } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv64gc -mtune=sifive-5-series -mbranch-cost=4 -mmovcc -fdump-rtl-ce1" } */
+
+typedef int __attribute__ ((mode (DI))) int_t;
+
+int_t
+movdifgt (double w, double x, int_t y, int_t z)
+{
+  return w > x ? y : z;
+}
+
+/* Expect branched assembly like:
+
+	fgt.d	a4,fa0,fa1
+	mv	a5,a0
+	mv	a0,a1
+	beq	a4,zero,.L2
+	mv	a0,a5
+.L2:
+ */
+
+/* { dg-final { scan-rtl-dump-not "Conversion succeeded on pass \[0-9\]+\\." "ce1" } } */
+/* { dg-final { scan-rtl-dump-not "if-conversion succeeded through" "ce1" } } */
+/* { dg-final { scan-assembler-times "\\s(?:fgt\\.d|flt\\.d)\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\s(?:beq|bne)\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/movdibfle.c b/gcc/testsuite/gcc.target/riscv/movdibfle.c
new file mode 100644
index 0000000..42d5401
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/movdibfle.c
@@ -0,0 +1,28 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target rv64 } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv64gc -mtune=sifive-5-series -mbranch-cost=4 -mmovcc -fdump-rtl-ce1" } */
+
+typedef int __attribute__ ((mode (DI))) int_t;
+
+int_t
+movdifle (double w, double x, int_t y, int_t z)
+{
+  return w <= x ? y : z;
+}
+
+/* Expect branched assembly like:
+
+	fle.d	a4,fa0,fa1
+	mv	a5,a0
+	mv	a0,a1
+	beq	a4,zero,.L2
+	mv	a0,a5
+.L2:
+ */
+
+/* { dg-final { scan-rtl-dump-not "Conversion succeeded on pass \[0-9\]+\\." "ce1" } } */
+/* { dg-final { scan-rtl-dump-not "if-conversion succeeded through" "ce1" } } */
+/* { dg-final { scan-assembler-times "\\s(?:fge\\.d|fle\\.d)\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\s(?:beq|bne)\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/movdibflt.c b/gcc/testsuite/gcc.target/riscv/movdibflt.c
new file mode 100644
index 0000000..08935ff
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/movdibflt.c
@@ -0,0 +1,28 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target rv64 } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv64gc -mtune=sifive-5-series -mbranch-cost=4 -mmovcc -fdump-rtl-ce1" } */
+
+typedef int __attribute__ ((mode (DI))) int_t;
+
+int_t
+movdiflt (double w, double x, int_t y, int_t z)
+{
+  return w < x ? y : z;
+}
+
+/* Expect branched assembly like:
+
+	flt.d	a4,fa0,fa1
+	mv	a5,a0
+	mv	a0,a1
+	beq	a4,zero,.L2
+	mv	a0,a5
+.L2:
+ */
+
+/* { dg-final { scan-rtl-dump-not "Conversion succeeded on pass \[0-9\]+\\." "ce1" } } */
+/* { dg-final { scan-rtl-dump-not "if-conversion succeeded through" "ce1" } } */
+/* { dg-final { scan-assembler-times "\\s(?:fgt\\.d|flt\\.d)\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\s(?:beq|bne)\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/movdibfne.c b/gcc/testsuite/gcc.target/riscv/movdibfne.c
new file mode 100644
index 0000000..1b71ad9
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/movdibfne.c
@@ -0,0 +1,28 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target rv64 } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv64gc -mtune=sifive-5-series -mbranch-cost=4 -mmovcc -fdump-rtl-ce1" } */
+
+typedef int __attribute__ ((mode (DI))) int_t;
+
+int_t
+movdifne (double w, double x, int_t y, int_t z)
+{
+  return w != x ? y : z;
+}
+
+/* Expect branched assembly like:
+
+	feq.d	a4,fa0,fa1
+	mv	a5,a0
+	mv	a0,a1
+	bne	a4,zero,.L2
+	mv	a0,a5
+.L2:
+ */
+
+/* { dg-final { scan-rtl-dump-not "Conversion succeeded on pass \[0-9\]+\\." "ce1" } } */
+/* { dg-final { scan-rtl-dump-not "if-conversion succeeded through" "ce1" } } */
+/* { dg-final { scan-assembler-times "\\sfeq\\.d\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\s(?:beq|bne)\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/movsibfge.c b/gcc/testsuite/gcc.target/riscv/movsibfge.c
new file mode 100644
index 0000000..fdfdf20
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/movsibfge.c
@@ -0,0 +1,28 @@
+/* { dg-do compile } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv64gc -mtune=sifive-5-series -mbranch-cost=4 -mmovcc -fdump-rtl-ce1" { target { rv64 } } } */
+/* { dg-options "-march=rv32gc -mtune=sifive-5-series -mbranch-cost=4 -mmovcc -fdump-rtl-ce1" { target { rv32 } } } */
+
+typedef int __attribute__ ((mode (SI))) int_t;
+
+int_t
+movsifge (double w, double x, int_t y, int_t z)
+{
+  return w >= x ? y : z;
+}
+
+/* Expect branched assembly like:
+
+	fge.d	a4,fa0,fa1
+	mv	a5,a0
+	mv	a0,a1
+	beq	a4,zero,.L2
+	mv	a0,a5
+.L2:
+ */
+
+/* { dg-final { scan-rtl-dump-not "Conversion succeeded on pass \[0-9\]+\\." "ce1" } } */
+/* { dg-final { scan-rtl-dump-not "if-conversion succeeded through" "ce1" } } */
+/* { dg-final { scan-assembler-times "\\s(?:fge\\.d|fle\\.d)\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\s(?:beq|bne)\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/movsibfgt.c b/gcc/testsuite/gcc.target/riscv/movsibfgt.c
new file mode 100644
index 0000000..20c55fc
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/movsibfgt.c
@@ -0,0 +1,28 @@
+/* { dg-do compile } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv64gc -mtune=sifive-5-series -mbranch-cost=4 -mmovcc -fdump-rtl-ce1" { target { rv64 } } } */
+/* { dg-options "-march=rv32gc -mtune=sifive-5-series -mbranch-cost=4 -mmovcc -fdump-rtl-ce1" { target { rv32 } } } */
+
+typedef int __attribute__ ((mode (SI))) int_t;
+
+int_t
+movsifgt (double w, double x, int_t y, int_t z)
+{
+  return w > x ? y : z;
+}
+
+/* Expect branched assembly like:
+
+	fgt.d	a4,fa0,fa1
+	mv	a5,a0
+	mv	a0,a1
+	beq	a4,zero,.L2
+	mv	a0,a5
+.L2:
+ */
+
+/* { dg-final { scan-rtl-dump-not "Conversion succeeded on pass \[0-9\]+\\." "ce1" } } */
+/* { dg-final { scan-rtl-dump-not "if-conversion succeeded through" "ce1" } } */
+/* { dg-final { scan-assembler-times "\\s(?:fgt\\.d|flt\\.d)\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\s(?:beq|bne)\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/movsibfle.c b/gcc/testsuite/gcc.target/riscv/movsibfle.c
new file mode 100644
index 0000000..9e428ac
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/movsibfle.c
@@ -0,0 +1,28 @@
+/* { dg-do compile } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv64gc -mtune=sifive-5-series -mbranch-cost=4 -mmovcc -fdump-rtl-ce1" { target { rv64 } } } */
+/* { dg-options "-march=rv32gc -mtune=sifive-5-series -mbranch-cost=4 -mmovcc -fdump-rtl-ce1" { target { rv32 } } } */
+
+typedef int __attribute__ ((mode (SI))) int_t;
+
+int_t
+movsifle (double w, double x, int_t y, int_t z)
+{
+  return w <= x ? y : z;
+}
+
+/* Expect branched assembly like:
+
+	fle.d	a4,fa0,fa1
+	mv	a5,a0
+	mv	a0,a1
+	beq	a4,zero,.L2
+	mv	a0,a5
+.L2:
+ */
+
+/* { dg-final { scan-rtl-dump-not "Conversion succeeded on pass \[0-9\]+\\." "ce1" } } */
+/* { dg-final { scan-rtl-dump-not "if-conversion succeeded through" "ce1" } } */
+/* { dg-final { scan-assembler-times "\\s(?:fge\\.d|fle\\.d)\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\s(?:beq|bne)\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/movsibflt.c b/gcc/testsuite/gcc.target/riscv/movsibflt.c
new file mode 100644
index 0000000..6a5f9fb
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/movsibflt.c
@@ -0,0 +1,28 @@
+/* { dg-do compile } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv64gc -mtune=sifive-5-series -mbranch-cost=4 -mmovcc -fdump-rtl-ce1" { target { rv64 } } } */
+/* { dg-options "-march=rv32gc -mtune=sifive-5-series -mbranch-cost=4 -mmovcc -fdump-rtl-ce1" { target { rv32 } } } */
+
+typedef int __attribute__ ((mode (SI))) int_t;
+
+int_t
+movsiflt (double w, double x, int_t y, int_t z)
+{
+  return w < x ? y : z;
+}
+
+/* Expect branched assembly like:
+
+	flt.d	a4,fa0,fa1
+	mv	a5,a0
+	mv	a0,a1
+	beq	a4,zero,.L2
+	mv	a0,a5
+.L2:
+ */
+
+/* { dg-final { scan-rtl-dump-not "Conversion succeeded on pass \[0-9\]+\\." "ce1" } } */
+/* { dg-final { scan-rtl-dump-not "if-conversion succeeded through" "ce1" } } */
+/* { dg-final { scan-assembler-times "\\s(?:fgt\\.d|flt\\.d)\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\s(?:beq|bne)\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/movsibfne.c b/gcc/testsuite/gcc.target/riscv/movsibfne.c
new file mode 100644
index 0000000..88f1469
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/movsibfne.c
@@ -0,0 +1,28 @@
+/* { dg-do compile } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv64gc -mtune=sifive-5-series -mbranch-cost=4 -mmovcc -fdump-rtl-ce1" { target { rv64 } } } */
+/* { dg-options "-march=rv32gc -mtune=sifive-5-series -mbranch-cost=4 -mmovcc -fdump-rtl-ce1" { target { rv32 } } } */
+
+typedef int __attribute__ ((mode (SI))) int_t;
+
+int_t
+movsifne (double w, double x, int_t y, int_t z)
+{
+  return w != x ? y : z;
+}
+
+/* Expect branched assembly like:
+
+	feq.d	a4,fa0,fa1
+	mv	a5,a0
+	mv	a0,a1
+	bne	a4,zero,.L2
+	mv	a0,a5
+.L2:
+ */
+
+/* { dg-final { scan-rtl-dump-not "Conversion succeeded on pass \[0-9\]+\\." "ce1" } } */
+/* { dg-final { scan-rtl-dump-not "if-conversion succeeded through" "ce1" } } */
+/* { dg-final { scan-assembler-times "\\sfeq\\.d\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\s(?:beq|bne)\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */