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2015-08-04 Szabolcs Nagy <szabolcs.nagy@arm.com>
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Backport from mainline:
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2015-07-06 Szabolcs Nagy <szabolcs.nagy@arm.com>
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PR target/66731
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* config/aarch64/aarch64.md (fnmul<mode>3): Handle -frounding-math.
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* gcc.target/aarch64/fnmul-1.c: New.
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* gcc.target/aarch64/fnmul-2.c: New.
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* gcc.target/aarch64/fnmul-3.c: New.
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* gcc.target/aarch64/fnmul-4.c: New.
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--- gcc/config/aarch64/aarch64.md (revision 226591)
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+++ gcc/config/aarch64/aarch64.md (revision 226592)
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@@ -3101,6 +3101,17 @@
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(mult:GPF
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(neg:GPF (match_operand:GPF 1 "register_operand" "w"))
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(match_operand:GPF 2 "register_operand" "w")))]
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+ "TARGET_FLOAT && !flag_rounding_math"
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+ "fnmul\\t%<s>0, %<s>1, %<s>2"
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+ [(set_attr "v8type" "fmul")
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+ (set_attr "mode" "<MODE>")]
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+)
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+
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+(define_insn "*fnmul<mode>3"
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+ [(set (match_operand:GPF 0 "register_operand" "=w")
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+ (neg:GPF (mult:GPF
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+ (match_operand:GPF 1 "register_operand" "w")
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+ (match_operand:GPF 2 "register_operand" "w"))))]
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"TARGET_FLOAT"
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"fnmul\\t%<s>0, %<s>1, %<s>2"
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[(set_attr "v8type" "fmul")
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--- gcc/testsuite/gcc.target/aarch64/fnmul-1.c (nonexistent)
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+++ gcc/testsuite/gcc.target/aarch64/fnmul-1.c (revision 226592)
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@@ -0,0 +1,16 @@
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+/* { dg-do compile } */
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+/* { dg-options "-O2" } */
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+
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+double
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+foo_d (double a, double b)
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+{
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+ /* { dg-final { scan-assembler "fnmul\\td\[0-9\]+, d\[0-9\]+, d\[0-9\]+" } } */
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+ return -a * b;
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+}
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+
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+float
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+foo_s (float a, float b)
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+{
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+ /* { dg-final { scan-assembler "fnmul\\ts\[0-9\]+, s\[0-9\]+, s\[0-9\]+" } } */
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+ return -a * b;
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+}
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--- gcc/testsuite/gcc.target/aarch64/fnmul-2.c (nonexistent)
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+++ gcc/testsuite/gcc.target/aarch64/fnmul-2.c (revision 226592)
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@@ -0,0 +1,18 @@
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+/* { dg-do compile } */
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+/* { dg-options "-O2 -frounding-math" } */
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+
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+double
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+foo_d (double a, double b)
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+{
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+ /* { dg-final { scan-assembler "fneg\\td\[0-9\]+, d\[0-9\]+" } } */
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+ /* { dg-final { scan-assembler "fmul\\td\[0-9\]+, d\[0-9\]+, d\[0-9\]+" } } */
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+ return -a * b;
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+}
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+
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+float
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+foo_s (float a, float b)
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+{
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+ /* { dg-final { scan-assembler "fneg\\ts\[0-9\]+, s\[0-9\]+" } } */
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+ /* { dg-final { scan-assembler "fmul\\ts\[0-9\]+, s\[0-9\]+, s\[0-9\]+" } } */
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+ return -a * b;
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+}
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--- gcc/testsuite/gcc.target/aarch64/fnmul-3.c (nonexistent)
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+++ gcc/testsuite/gcc.target/aarch64/fnmul-3.c (revision 226592)
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@@ -0,0 +1,16 @@
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+/* { dg-do compile } */
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+/* { dg-options "-O2" } */
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+
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+double
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+foo_d (double a, double b)
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+{
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+ /* { dg-final { scan-assembler "fnmul\\td\[0-9\]+, d\[0-9\]+, d\[0-9\]+" } } */
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+ return -(a * b);
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+}
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+
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+float
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+foo_s (float a, float b)
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+{
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+ /* { dg-final { scan-assembler "fnmul\\ts\[0-9\]+, s\[0-9\]+, s\[0-9\]+" } } */
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+ return -(a * b);
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+}
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--- gcc/testsuite/gcc.target/aarch64/fnmul-4.c (nonexistent)
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+++ gcc/testsuite/gcc.target/aarch64/fnmul-4.c (revision 226592)
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@@ -0,0 +1,16 @@
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+/* { dg-do compile } */
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+/* { dg-options "-O2 -frounding-math" } */
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+
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+double
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+foo_d (double a, double b)
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+{
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+ /* { dg-final { scan-assembler "fnmul\\td\[0-9\]+, d\[0-9\]+, d\[0-9\]+" } } */
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+ return -(a * b);
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+}
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+
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+float
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+foo_s (float a, float b)
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+{
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+ /* { dg-final { scan-assembler "fnmul\\ts\[0-9\]+, s\[0-9\]+, s\[0-9\]+" } } */
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+ return -(a * b);
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+}
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