[gcc(refs/users/clyon/heads/mve-autovec)] arm: Add tests for PR target/100757

[Christophe Lyon]

https://gcc.gnu.org/g:feab735e2346333b2209610c323d38b7e3eb5ed1

commit feab735e2346333b2209610c323d38b7e3eb5ed1
Author: Christophe Lyon <christophe.lyon@foss.st.com>
Date:   Wed Oct 13 09:15:58 2021 +0000

    arm: Add tests for PR target/100757
    
    These tests currently trigger an ICE which is fixed later in the patch
    series.
    
    The pr100757*.c testcases are derived from
    gcc.c-torture/compile/20160205-1.c, forcing the use of MVE, and using
    various types and return values different from 0 and 1 to avoid
    commonalization with boolean masks.  In addition, since we should not
    need these masks, the tests make sure they are not present.
    
    2022-01-13  Christophe Lyon  <christophe.lyon@foss.st.com>
    
            gcc/testsuite/
            PR target/100757
            * gcc.target/arm/simd/pr100757-2.c: New.
            * gcc.target/arm/simd/pr100757-3.c: New.
            * gcc.target/arm/simd/pr100757-4.c: New.
            * gcc.target/arm/simd/pr100757.c: New.

Diff:
---
 gcc/testsuite/gcc.target/arm/simd/pr100757-2.c | 20 ++++++++++++++++++++
 gcc/testsuite/gcc.target/arm/simd/pr100757-3.c | 20 ++++++++++++++++++++
 gcc/testsuite/gcc.target/arm/simd/pr100757-4.c | 19 +++++++++++++++++++
 gcc/testsuite/gcc.target/arm/simd/pr100757.c   | 19 +++++++++++++++++++
 4 files changed, 78 insertions(+)

diff --git a/gcc/testsuite/gcc.target/arm/simd/pr100757-2.c b/gcc/testsuite/gcc.target/arm/simd/pr100757-2.c
new file mode 100644
index 00000000000..c2262b4d81e
--- /dev/null
+++ b/gcc/testsuite/gcc.target/arm/simd/pr100757-2.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target arm_v8_1m_mve_fp_ok } */
+/* { dg-add-options arm_v8_1m_mve_fp } */
+/* { dg-additional-options "-O3 -funsafe-math-optimizations" } */
+/* Derived from gcc.c-torture/compile/20160205-1.c.  */
+
+float a[32];
+int fn1(int d) {
+  int c = 4;
+  for (int b = 0; b < 32; b++)
+    if (a[b] != 2.0f)
+      c = 5;
+  return c;
+}
+
+/* { dg-final { scan-assembler-times {\t.word\t1073741824\n} 4 } } */ /* Constant 2.0f.  */
+/* { dg-final { scan-assembler-times {\t.word\t4\n} 4 } } */ /* Initial value for c.  */
+/* { dg-final { scan-assembler-times {\t.word\t5\n} 4 } } */ /* Possible value for c.  */
+/* { dg-final { scan-assembler-not {\t.word\t1\n} } } */ /* 'true' mask.  */
+/* { dg-final { scan-assembler-not {\t.word\t0\n} } } */ /* 'false' mask.  */
diff --git a/gcc/testsuite/gcc.target/arm/simd/pr100757-3.c b/gcc/testsuite/gcc.target/arm/simd/pr100757-3.c
new file mode 100644
index 00000000000..e604555c04c
--- /dev/null
+++ b/gcc/testsuite/gcc.target/arm/simd/pr100757-3.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target arm_v8_1m_mve_fp_ok } */
+/* { dg-add-options arm_v8_1m_mve_fp } */
+/* { dg-additional-options "-O3 -funsafe-math-optimizations" } */
+/* Copied from gcc.c-torture/compile/20160205-1.c.  */
+
+float a[32];
+float fn1(int d) {
+  float c = 4.0f;
+  for (int b = 0; b < 32; b++)
+    if (a[b] != 2.0f)
+      c = 5.0f;
+  return c;
+}
+
+/* { dg-final { scan-assembler-times {\t.word\t1073741824\n} 4 } } */ /* Constant 2.0f.  */
+/* { dg-final { scan-assembler-times {\t.word\t1084227584\n} 4 } } */ /* Initial value for c (4.0).  */
+/* { dg-final { scan-assembler-times {\t.word\t1082130432\n} 4 } } */ /* Possible value for c (5.0).  */
+/* { dg-final { scan-assembler-not {\t.word\t1\n} } } */ /* 'true' mask.  */
+/* { dg-final { scan-assembler-not {\t.word\t0\n} } } */ /* 'false' mask.  */
diff --git a/gcc/testsuite/gcc.target/arm/simd/pr100757-4.c b/gcc/testsuite/gcc.target/arm/simd/pr100757-4.c
new file mode 100644
index 00000000000..c12040c517f
--- /dev/null
+++ b/gcc/testsuite/gcc.target/arm/simd/pr100757-4.c
@@ -0,0 +1,19 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target arm_v8_1m_mve_ok } */
+/* { dg-add-options arm_v8_1m_mve } */
+/* { dg-additional-options "-O3" } */
+/* Derived from gcc.c-torture/compile/20160205-1.c.  */
+
+unsigned int a[32];
+int fn1(int d) {
+  int c = 2;
+  for (int b = 0; b < 32; b++)
+    if (a[b])
+      c = 3;
+  return c;
+}
+
+/* { dg-final { scan-assembler-times {\t.word\t0\n} 4 } } */ /* 'false' mask.  */
+/* { dg-final { scan-assembler-not {\t.word\t1\n} } } */ /* 'true' mask.  */
+/* { dg-final { scan-assembler-times {\t.word\t2\n} 4 } } */ /* Initial value for c.  */
+/* { dg-final { scan-assembler-times {\t.word\t3\n} 4 } } */ /* Possible value for c.  */
diff --git a/gcc/testsuite/gcc.target/arm/simd/pr100757.c b/gcc/testsuite/gcc.target/arm/simd/pr100757.c
new file mode 100644
index 00000000000..41d6e4e2d7a
--- /dev/null
+++ b/gcc/testsuite/gcc.target/arm/simd/pr100757.c
@@ -0,0 +1,19 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target arm_v8_1m_mve_ok } */
+/* { dg-add-options arm_v8_1m_mve } */
+/* { dg-additional-options "-O3" } */
+/* Derived from gcc.c-torture/compile/20160205-1.c.  */
+
+int a[32];
+int fn1(int d) {
+  int c = 2;
+  for (int b = 0; b < 32; b++)
+    if (a[b])
+      c = 3;
+  return c;
+}
+
+/* { dg-final { scan-assembler-times {\t.word\t0\n} 4 } } */ /* 'false' mask.  */
+/* { dg-final { scan-assembler-not {\t.word\t1\n} } } */ /* 'true' mask.  */
+/* { dg-final { scan-assembler-times {\t.word\t2\n} 4 } } */ /* Initial value for c.  */
+/* { dg-final { scan-assembler-times {\t.word\t3\n} 4 } } */ /* Possible value for c.  */