GCC Maintainers:
The support for the vec_mulo and vec_mule that was recently submitted
has a couple of bugs. Specifically, they were implemented with
int/unsigned int args and return int/unsigned int. The return types
should have been long long/unsigned long long. Additionally it was
noted that unsigned version returned a signed version by mistake.
The following patch fixes these issues. The patch has been tested on
powerpc64le-unknown-linux-gnu (Power 8 LE) and on
powerpc64-unknown-linux-gnu (Power 8 BE) with no regressions.
Is the patch OK for gcc mainline?
Carl Love
-----------------------------------------------------------------------
gcc/ChangeLog:
2017-06-08 Carl Love <c...@us.ibm.com>
* config/rs6000/rs6000-c: The return type of the following
built-in functions was implemented as int not long long. Fix sign
of return value for the unsigned version of vec_mulo and vec_mule.
vector unsigned long long vec_bperm (vector unsigned long long,
vector unsigned char)
vector signed long long vec_mule (vector signed int,
vector signed int)
vector unsigned long long vec_mule (vector unsigned int,
vector unsigned int)
vector signed long long vec_mulo (vector signed int,
vector signed int)
vector unsigned long long vec_mulo (vector unsigned int,
vector unsigned int)
* doc/extend.texi: Fix the documentation for the
built-in functions.
gcc/testsuite/ChangeLog:
2017-06-08 Carl Love <c...@us.ibm.com>
* gcc.target/powerpc/builtins-3.c: Fix vec_mule, vec_mulo test cases.
---
gcc/config/rs6000/rs6000-c.c | 12 +++++------
gcc/doc/extend.texi | 13 +++++++-----
gcc/testsuite/gcc.target/powerpc/builtins-3.c | 30 ++++++++++++++-------------
3 files changed, 30 insertions(+), 25 deletions(-)
diff --git a/gcc/config/rs6000/rs6000-c.c b/gcc/config/rs6000/rs6000-c.c
index b602dee..a917ea7 100644
--- a/gcc/config/rs6000/rs6000-c.c
+++ b/gcc/config/rs6000/rs6000-c.c
@@ -2212,9 +2212,9 @@ const struct altivec_builtin_types
altivec_overloaded_builtins[] = {
{ ALTIVEC_BUILTIN_VEC_MULE, ALTIVEC_BUILTIN_VMULESH,
RS6000_BTI_V4SI, RS6000_BTI_V8HI, RS6000_BTI_V8HI, 0 },
{ ALTIVEC_BUILTIN_VEC_MULE, ALTIVEC_BUILTIN_VMULESH,
- RS6000_BTI_V4SI, RS6000_BTI_V4SI, RS6000_BTI_V4SI, 0 },
- { ALTIVEC_BUILTIN_VEC_MULE, ALTIVEC_BUILTIN_VMULESH,
- RS6000_BTI_unsigned_V4SI, RS6000_BTI_unsigned_V4SI,
+ RS6000_BTI_V2DI, RS6000_BTI_V4SI, RS6000_BTI_V4SI, 0 },
+ { ALTIVEC_BUILTIN_VEC_MULE, ALTIVEC_BUILTIN_VMULEUH,
+ RS6000_BTI_unsigned_V2DI, RS6000_BTI_unsigned_V4SI,
RS6000_BTI_unsigned_V4SI, 0 },
{ ALTIVEC_BUILTIN_VEC_VMULEUB, ALTIVEC_BUILTIN_VMULEUB,
RS6000_BTI_unsigned_V8HI, RS6000_BTI_unsigned_V16QI,
RS6000_BTI_unsigned_V16QI, 0 },
@@ -2231,9 +2231,9 @@ const struct altivec_builtin_types
altivec_overloaded_builtins[] = {
{ ALTIVEC_BUILTIN_VEC_MULO, ALTIVEC_BUILTIN_VMULOUH,
RS6000_BTI_unsigned_V4SI, RS6000_BTI_unsigned_V8HI,
RS6000_BTI_unsigned_V8HI, 0 },
{ ALTIVEC_BUILTIN_VEC_MULO, ALTIVEC_BUILTIN_VMULOSH,
- RS6000_BTI_V4SI, RS6000_BTI_V4SI, RS6000_BTI_V4SI, 0 },
- { ALTIVEC_BUILTIN_VEC_MULO, ALTIVEC_BUILTIN_VMULOSH,
- RS6000_BTI_unsigned_V4SI, RS6000_BTI_unsigned_V4SI,
+ RS6000_BTI_V2DI, RS6000_BTI_V4SI, RS6000_BTI_V4SI, 0 },
+ { ALTIVEC_BUILTIN_VEC_MULO, ALTIVEC_BUILTIN_VMULOUH,
+ RS6000_BTI_unsigned_V2DI, RS6000_BTI_unsigned_V4SI,
RS6000_BTI_unsigned_V4SI, 0 },
{ ALTIVEC_BUILTIN_VEC_MULO, ALTIVEC_BUILTIN_VMULOSH,
RS6000_BTI_V4SI, RS6000_BTI_V8HI, RS6000_BTI_V8HI, 0 },
diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi
index d147d5a..d467a16 100644
--- a/gcc/doc/extend.texi
+++ b/gcc/doc/extend.texi
@@ -16345,10 +16345,10 @@ vector signed short vec_mule (vector signed char,
vector unsigned int vec_mule (vector unsigned short,
vector unsigned short);
vector signed int vec_mule (vector signed short, vector signed short);
-vector unsigned int vec_mule (vector unsigned int,
- vector unsigned int);
-vector signed int vec_mule (vector signed int,
- vector signed int);
+vector unsigned long long vec_mule (vector unsigned int,
+ vector unsigned int);
+vector signed long long vec_mule (vector signed int,
+ vector signed int);
vector signed int vec_vmulesh (vector signed short,
vector signed short);
@@ -16368,7 +16368,10 @@ vector signed short vec_mulo (vector signed char,
vector signed char);
vector unsigned int vec_mulo (vector unsigned short,
vector unsigned short);
vector signed int vec_mulo (vector signed short, vector signed short);
-vector unsigned int vec_mulo (vector unsigned short, vector unsigned short);
+vector unsigned long long vec_mulo (vector unsigned int,
+ vector unsigned int);
+vector signed long long vec_mulo (vector signed int,
+ vector signed int);
vector signed int vec_vmulosh (vector signed short,
vector signed short);
diff --git a/gcc/testsuite/gcc.target/powerpc/builtins-3.c
b/gcc/testsuite/gcc.target/powerpc/builtins-3.c
index 5cbac81..b252488 100644
--- a/gcc/testsuite/gcc.target/powerpc/builtins-3.c
+++ b/gcc/testsuite/gcc.target/powerpc/builtins-3.c
@@ -112,26 +112,26 @@ test_vull_slo_vull_vuc (vector unsigned long long x,
vector unsigned char y)
return vec_slo (x, y);
}
-vector signed int
-test_vsi_mule_vsi_vsi (vector signed int x, vector signed int y)
+vector signed long long
+test_vsll_mule_vsi_vsi (vector signed int x, vector signed int y)
{
return vec_mule (x, y);
}
-vector unsigned int
-test_vui_mule_vui_vui (vector unsigned int x, vector unsigned int y)
+vector unsigned long long
+test_vull_mule_vui_vui (vector unsigned int x, vector unsigned int y)
{
return vec_mule (x, y);
}
-vector signed int
-test_vsi_mulo_vsi_vsi (vector signed int x, vector signed int y)
+vector signed long long
+test_vsll_mulo_vsi_vsi (vector signed int x, vector signed int y)
{
return vec_mulo (x, y);
}
-vector unsigned int
-test_vui_mulo_vui_vui (vector unsigned int x, vector unsigned int y)
+vector unsigned long long
+test_vull_mulo_vui_vui (vector unsigned int x, vector unsigned int y)
{
return vec_mulo (x, y);
}
@@ -207,10 +207,10 @@ test_vul_sldw_vul_vul (vector unsigned long long x,
test_vsll_slo_vsll_vuc 1 vslo
test_vull_slo_vsll_vsc 1 vslo
test_vull_slo_vsll_vuc 1 vslo
- test_vsi_mulo_vsi_vsi 1 vmulosh
- test_vui_mulo_vui_vui 1 vmulosh
- test_vsi_mule_vsi_vsi 1 vmulesh
- test_vui_mule_vui_vui 1 vmulesh
+ test_vsll_mulo_vsi_vsi 1 vmulosh
+ test_vull_mulo_vui_vui 1 vmulouh
+ test_vsll_mule_vsi_vsi 1 vmulesh
+ test_vull_mule_vui_vui 1 vmuleuh
test_vsc_mulo_vsc_vsc 1 xxsldwi
test_vuc_mulo_vuc_vuc 1 xxsldwi
test_vssi_mulo_vssi_vssi 1 xxsldwi
@@ -236,6 +236,8 @@ test_vul_sldw_vul_vul (vector unsigned long long x,
/* { dg-final { scan-assembler-times "xvnegsp" 1 } } */
/* { dg-final { scan-assembler-times "xvnegdp" 1 } } */
/* { dg-final { scan-assembler-times "vslo" 4 } } */
-/* { dg-final { scan-assembler-times "vmulosh" 2 } } */
-/* { dg-final { scan-assembler-times "vmulesh" 2 } } */
+/* { dg-final { scan-assembler-times "vmulosh" 1 } } */
+/* { dg-final { scan-assembler-times "vmulouh" 1 } } */
+/* { dg-final { scan-assembler-times "vmulesh" 1 } } */
+/* { dg-final { scan-assembler-times "vmuleuh" 1 } } */
/* { dg-final { scan-assembler-times "xxsldwi" 8 } } */
--
1.9.1
