Add test to make sure prefixed load/store instructions are generated if the
offset would not fit in the DS/DQ encodings.
2020-06-01 Michael Meissner <meiss...@linux.ibm.com>
* gcc.target/powerpc/prefix-ds-dq.c: New test.
---
gcc/testsuite/gcc.target/powerpc/prefix-ds-dq.c | 159 ++++++++++++++++++++++++
1 file changed, 159 insertions(+)
diff --git a/gcc/testsuite/gcc.target/powerpc/prefix-ds-dq.c
b/gcc/testsuite/gcc.target/powerpc/prefix-ds-dq.c
index e69de29..68fbad3 100644
--- a/gcc/testsuite/gcc.target/powerpc/prefix-ds-dq.c
+++ b/gcc/testsuite/gcc.target/powerpc/prefix-ds-dq.c
@@ -0,0 +1,159 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target powerpc_prefixed_addr } */
+/* { dg-options "-O2 -mdejagnu-cpu=future" } */
+
+/* Tests whether we generate a prefixed load/store operation for addresses that
+ don't meet DS/DQ offset constraints. */
+
+struct packed_struct
+{
+ long long pad; /* offset 0 bytes. */
+ unsigned char pad_uc; /* offset 8 bytes. */
+ unsigned char uc; /* offset 9 bytes. */
+
+ unsigned char pad_sc[sizeof (long long) - sizeof (unsigned char)];
+ unsigned char sc; /* offset 17 bytes. */
+
+ unsigned char pad_us[sizeof (long long) - sizeof (signed char)];
+ unsigned short us; /* offset 25 bytes. */
+
+ unsigned char pad_ss[sizeof (long long) - sizeof (unsigned short)];
+ short ss; /* offset 33 bytes. */
+
+ unsigned char pad_ui[sizeof (long long) - sizeof (short)];
+ unsigned int ui; /* offset 41 bytes. */
+
+ unsigned char pad_si[sizeof (long long) - sizeof (unsigned int)];
+ unsigned int si; /* offset 49 bytes. */
+
+ unsigned char pad_f[sizeof (long long) - sizeof (int)];
+ float f; /* offset 57 bytes. */
+
+ unsigned char pad_d[sizeof (long long) - sizeof (float)];
+ double d; /* offset 65 bytes. */
+ __float128 f128; /* offset 73 bytes. */
+} __attribute__((packed));
+
+unsigned char
+load_uc (struct packed_struct *p)
+{
+ return p->uc; /* LBZ 3,9(3). */
+}
+
+signed char
+load_sc (struct packed_struct *p)
+{
+ return p->sc; /* LBZ 3,17(3) + EXTSB 3,3. */
+}
+
+unsigned short
+load_us (struct packed_struct *p)
+{
+ return p->us; /* LHZ 3,25(3). */
+}
+
+short
+load_ss (struct packed_struct *p)
+{
+ return p->ss; /* LHA 3,33(3). */
+}
+
+unsigned int
+load_ui (struct packed_struct *p)
+{
+ return p->ui; /* LWZ 3,41(3). */
+}
+
+int
+load_si (struct packed_struct *p)
+{
+ return p->si; /* PLWA 3,49(3). */
+}
+
+float
+load_float (struct packed_struct *p)
+{
+ return p->f; /* LFS 1,57(3). */
+}
+
+double
+load_double (struct packed_struct *p)
+{
+ return p->d; /* LFD 1,65(3). */
+}
+
+__float128
+load_float128 (struct packed_struct *p)
+{
+ return p->f128; /* PLXV 34,73(3). */
+}
+
+void
+store_uc (struct packed_struct *p, unsigned char uc)
+{
+ p->uc = uc; /* STB 4,9(3). */
+}
+
+void
+store_sc (struct packed_struct *p, signed char sc)
+{
+ p->sc = sc; /* STB 4,17(3). */
+}
+
+void
+store_us (struct packed_struct *p, unsigned short us)
+{
+ p->us = us; /* STH 4,25(3). */
+}
+
+void
+store_ss (struct packed_struct *p, signed short ss)
+{
+ p->ss = ss; /* STH 4,33(3). */
+}
+
+void
+store_ui (struct packed_struct *p, unsigned int ui)
+{
+ p->ui = ui; /* STW 4,41(3). */
+}
+
+void
+store_si (struct packed_struct *p, signed int si)
+{
+ p->si = si; /* STW 4,49(3). */
+}
+
+void
+store_float (struct packed_struct *p, float f)
+{
+ p->f = f; /* STFS 1,57(3). */
+}
+
+void
+store_double (struct packed_struct *p, double d)
+{
+ p->d = d; /* STFD 1,65(3). */
+}
+
+void
+store_float128 (struct packed_struct *p, __float128 f128)
+{
+ p->f128 = f128; /* PSTXV 34,1(3). */
+}
+
+/* { dg-final { scan-assembler-times {\mextsb\M} 1 } } */
+/* { dg-final { scan-assembler-times {\mlbz\M} 2 } } */
+/* { dg-final { scan-assembler-times {\mlfd\M} 1 } } */
+/* { dg-final { scan-assembler-times {\mlfs\M} 1 } } */
+/* { dg-final { scan-assembler-times {\mlha\M} 1 } } */
+/* { dg-final { scan-assembler-times {\mlhz\M} 1 } } */
+/* { dg-final { scan-assembler-times {\mlwz\M} 1 } } */
+/* { dg-final { scan-assembler-times {\mplwa\M} 1 } } */
+/* { dg-final { scan-assembler-times {\mplxv\M} 1 } } */
+/* { dg-final { scan-assembler-times {\mpstxv\M} 1 } } */
+/* { dg-final { scan-assembler-times {\mstb\M} 2 } } */
+/* { dg-final { scan-assembler-times {\mstfd\M} 1 } } */
+/* { dg-final { scan-assembler-times {\mstfs\M} 1 } } */
+/* { dg-final { scan-assembler-times {\msth\M} 2 } } */
+/* { dg-final { scan-assembler-times {\mstw\M} 2 } } */
--
1.8.3.1
