Verify, for the floating-point NE conditional-move operation, that
if-conversion triggers via `noce_try_cmove' at the respective
sufficiently high `-mbranch-cost=' settings that make branchless code
sequences produced by if-conversion cheaper than their original branched
equivalents, and that extraneous instructions such as SNEZ, etc. are not
present in output.
gcc/testsuite/
* gcc.target/riscv/movdifeq-sfb.c: New test.
* gcc.target/riscv/movdifeq-thead.c: New test.
* gcc.target/riscv/movdifeq-ventana.c: New test.
* gcc.target/riscv/movdifeq-zicond.c: New test.
* gcc.target/riscv/movdifeq.c: New test.
* gcc.target/riscv/movsifeq-sfb.c: New test.
* gcc.target/riscv/movsifeq-thead.c: New test.
* gcc.target/riscv/movsifeq-ventana.c: New test.
* gcc.target/riscv/movsifeq-zicond.c: New test.
* gcc.target/riscv/movsifeq.c: New test.
---
gcc/testsuite/gcc.target/riscv/movdifeq-sfb.c | 27 +++++++++++++++++++++
gcc/testsuite/gcc.target/riscv/movdifeq-thead.c | 25 +++++++++++++++++++
gcc/testsuite/gcc.target/riscv/movdifeq-ventana.c | 28 ++++++++++++++++++++++
gcc/testsuite/gcc.target/riscv/movdifeq-zicond.c | 28 ++++++++++++++++++++++
gcc/testsuite/gcc.target/riscv/movdifeq.c | 28 ++++++++++++++++++++++
gcc/testsuite/gcc.target/riscv/movsifeq-sfb.c | 27 +++++++++++++++++++++
gcc/testsuite/gcc.target/riscv/movsifeq-thead.c | 25 +++++++++++++++++++
gcc/testsuite/gcc.target/riscv/movsifeq-ventana.c | 28 ++++++++++++++++++++++
gcc/testsuite/gcc.target/riscv/movsifeq-zicond.c | 28 ++++++++++++++++++++++
gcc/testsuite/gcc.target/riscv/movsifeq.c | 28 ++++++++++++++++++++++
10 files changed, 272 insertions(+)
gcc-riscv-test-movccne-generic.diff
Index: gcc/gcc/testsuite/gcc.target/riscv/movdifeq-sfb.c
===================================================================
--- /dev/null
+++ gcc/gcc/testsuite/gcc.target/riscv/movdifeq-sfb.c
@@ -0,0 +1,27 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target rv64 } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" } } */
+/* { dg-options "-march=rv64gc -mtune=sifive-7-series -mbranch-cost=1
-fdump-rtl-ce1" } */
+
+typedef int __attribute__ ((mode (DI))) int_t;
+
+int_t
+movdifeq (double w, double x, int_t y, int_t z)
+{
+ return w == x ? y : z;
+}
+
+/* Expect short forward branch assembly like:
+
+ feq.d a5,fa0,fa1
+ beq a5,zero,1f # movcc
+ mv a1,a0
+1:
+ mv a0,a1
+ */
+
+/* { 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 "\\sfeq\\.d\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\s(?:beq|bne)\\s\[^\\s\]+\\s# movcc\\s"
1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
Index: gcc/gcc/testsuite/gcc.target/riscv/movdifeq-thead.c
===================================================================
--- /dev/null
+++ gcc/gcc/testsuite/gcc.target/riscv/movdifeq-thead.c
@@ -0,0 +1,25 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target rv64 } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" } } */
+/* { dg-options "-march=rv64gc_xtheadcondmov -mtune=thead-c906 -mbranch-cost=1
-fdump-rtl-ce1" } */
+
+typedef int __attribute__ ((mode (DI))) int_t;
+
+int_t
+movdifeq (double w, double x, int_t y, int_t z)
+{
+ return w == x ? y : z;
+}
+
+/* Expect branchless assembly like:
+
+ feq.d a5,fa0,fa1
+ th.mveqz a0,a1,a5
+ */
+
+/* { 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 "\\sfeq\\.d\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\s(?:th\\.mveqz|th\\.mvnez)\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
+/* { dg-final { scan-assembler-not "\\s(?:beq|bne)\\s" } } */
Index: gcc/gcc/testsuite/gcc.target/riscv/movdifeq-ventana.c
===================================================================
--- /dev/null
+++ gcc/gcc/testsuite/gcc.target/riscv/movdifeq-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=3
-fdump-rtl-ce1" } */
+
+typedef int __attribute__ ((mode (DI))) int_t;
+
+int_t
+movdifeq (double w, double x, int_t y, int_t z)
+{
+ return w == x ? y : z;
+}
+
+/* Expect branchless assembly like:
+
+ feq.d a5,fa0,fa1
+ vt.maskcn a1,a1,a5
+ vt.maskc a0,a0,a5
+ or a0,a0,a1
+ */
+
+/* { 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 "\\sfeq\\.d\\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(?:beq|bne)\\s" } } */
Index: gcc/gcc/testsuite/gcc.target/riscv/movdifeq-zicond.c
===================================================================
--- /dev/null
+++ gcc/gcc/testsuite/gcc.target/riscv/movdifeq-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=3
-fdump-rtl-ce1" } */
+
+typedef int __attribute__ ((mode (DI))) int_t;
+
+int_t
+movdifeq (double w, double x, int_t y, int_t z)
+{
+ return w == x ? y : z;
+}
+
+/* Expect branchless assembly like:
+
+ feq.d a5,fa0,fa1
+ czero.nez a1,a1,a5
+ czero.eqz a0,a0,a5
+ or a0,a0,a1
+ */
+
+/* { 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 "\\sfeq\\.d\\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(?:beq|bne)\\s" } } */
Index: gcc/gcc/testsuite/gcc.target/riscv/movdifeq.c
===================================================================
--- /dev/null
+++ gcc/gcc/testsuite/gcc.target/riscv/movdifeq.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=5 -mmovcc
-fdump-rtl-ce1" } */
+
+typedef int __attribute__ ((mode (DI))) int_t;
+
+int_t
+movdifeq (double w, double x, int_t y, int_t z)
+{
+ return w == x ? y : z;
+}
+
+/* Expect branchless assembly like:
+
+ feq.d a5,fa0,fa1
+ neg a5,a5
+ and a0,a5,a0
+ not a5,a5
+ and a5,a5,a1
+ or a0,a0,a5
+ */
+
+/* { 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 "\\sfeq\\.d\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:beq|bne)\\s" } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
Index: gcc/gcc/testsuite/gcc.target/riscv/movsifeq-sfb.c
===================================================================
--- /dev/null
+++ gcc/gcc/testsuite/gcc.target/riscv/movsifeq-sfb.c
@@ -0,0 +1,27 @@
+/* { dg-do compile } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" } } */
+/* { dg-options "-march=rv64gc -mtune=sifive-7-series -mbranch-cost=1
-fdump-rtl-ce1" { target { rv64 } } } */
+/* { dg-options "-march=rv32gc -mtune=sifive-7-series -mbranch-cost=1
-fdump-rtl-ce1" { target { rv32 } } } */
+
+typedef int __attribute__ ((mode (SI))) int_t;
+
+int_t
+movsifeq (double w, double x, int_t y, int_t z)
+{
+ return w == x ? y : z;
+}
+
+/* Expect short forward branch assembly like:
+
+ feq.d a5,fa0,fa1
+ beq a5,zero,1f # movcc
+ mv a1,a0
+1:
+ mv a0,a1
+ */
+
+/* { 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 "\\sfeq\\.d\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\s(?:beq|bne)\\s\[^\\s\]+\\s# movcc\\s"
1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
Index: gcc/gcc/testsuite/gcc.target/riscv/movsifeq-thead.c
===================================================================
--- /dev/null
+++ gcc/gcc/testsuite/gcc.target/riscv/movsifeq-thead.c
@@ -0,0 +1,25 @@
+/* { dg-do compile } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" } } */
+/* { dg-options "-march=rv64gc_xtheadcondmov -mtune=thead-c906 -mbranch-cost=1
-fdump-rtl-ce1" { target { rv64 } } } */
+/* { dg-options "-march=rv32gc_xtheadcondmov -mtune=thead-c906 -mbranch-cost=1
-fdump-rtl-ce1" { target { rv32 } } } */
+
+typedef int __attribute__ ((mode (SI))) int_t;
+
+int_t
+movsifeq (double w, double x, int_t y, int_t z)
+{
+ return w == x ? y : z;
+}
+
+/* Expect branchless assembly like:
+
+ feq.d a5,fa0,fa1
+ th.mveqz a0,a1,a5
+ */
+
+/* { 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 "\\sfeq\\.d\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\s(?:th\\.mveqz|th\\.mvnez)\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:beq|bne)\\s" } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
Index: gcc/gcc/testsuite/gcc.target/riscv/movsifeq-ventana.c
===================================================================
--- /dev/null
+++ gcc/gcc/testsuite/gcc.target/riscv/movsifeq-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=3
-fdump-rtl-ce1" } */
+
+typedef int __attribute__ ((mode (SI))) int_t;
+
+int_t
+movsifeq (double w, double x, int_t y, int_t z)
+{
+ return w == x ? y : z;
+}
+
+/* Expect branchless assembly like:
+
+ feq.d a5,fa0,fa1
+ vt.maskcn a1,a1,a5
+ vt.maskc a0,a0,a5
+ or a0,a0,a1
+ */
+
+/* { 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 "\\sfeq\\.d\\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(?:beq|bne)\\s" } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
Index: gcc/gcc/testsuite/gcc.target/riscv/movsifeq-zicond.c
===================================================================
--- /dev/null
+++ gcc/gcc/testsuite/gcc.target/riscv/movsifeq-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=3
-fdump-rtl-ce1" { target { rv64 } } } */
+/* { dg-options "-march=rv32gc_zicond -mtune=rocket -mbranch-cost=3
-fdump-rtl-ce1" { target { rv32 } } } */
+
+typedef int __attribute__ ((mode (SI))) int_t;
+
+int_t
+movsifeq (double w, double x, int_t y, int_t z)
+{
+ return w == x ? y : z;
+}
+
+/* Expect branchless assembly like:
+
+ feq.d a5,fa0,fa1
+ czero.nez a1,a1,a5
+ czero.eqz a0,a0,a5
+ or a0,a0,a1
+ */
+
+/* { 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 "\\sfeq\\.d\\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(?:beq|bne)\\s" } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
Index: gcc/gcc/testsuite/gcc.target/riscv/movsifeq.c
===================================================================
--- /dev/null
+++ gcc/gcc/testsuite/gcc.target/riscv/movsifeq.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=5 -mmovcc
-fdump-rtl-ce1" { target { rv64 } } } */
+/* { dg-options "-march=rv32gc -mtune=sifive-5-series -mbranch-cost=5 -mmovcc
-fdump-rtl-ce1" { target { rv32 } } } */
+
+typedef int __attribute__ ((mode (SI))) int_t;
+
+int_t
+movsifeq (double w, double x, int_t y, int_t z)
+{
+ return w == x ? y : z;
+}
+
+/* Expect branchless assembly like:
+
+ feq.d a5,fa0,fa1
+ neg a5,a5
+ and a0,a5,a0
+ not a5,a5
+ and a5,a5,a1
+ or a0,a0,a5
+ */
+
+/* { 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 "\\sfeq\\.d\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:beq|bne)\\s" } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
