[Mesa-dev] [PATCH] libclc: Implement clz() builtin
Aaron Watry
awatry at gmail.com
Mon Apr 15 17:20:31 PDT 2013
Squashed commit of the following:
commit a0df0a0e86c55c1bdc0b9c0f5a739e5adef4b056
Author: Aaron Watry <awatry at gmail.com>
Date: Mon Apr 15 18:42:04 2013 -0500
libclc: Rename clz.ll to clz_if.ll to ensure it gets built.
configure.py treats files that have the same name with the .cl and .ll
extensions as overriding eachother.
E.g. If you have clz.cl and clz.ll both specified to be built in the same
SOURCES file, only the first file listed will actually be built.
Since the contents of clz.ll were an interface that is implemented in
clz_impl.ll, rename clz.ll to clz_if.ll to make sure that the interface is
built.
commit 931b62bed05c58f737de625bd415af09571a6a5a
Author: Aaron Watry <awatry at gmail.com>
Date: Sat Apr 13 12:32:54 2013 -0500
libclc: llvm assembly implementation of clz
Untested... currently crashes in the same manner as add_sat.
commit 6ef0b7b0b6d2e5584086b4b9a9243743b2e0538f
Author: Aaron Watry <awatry at gmail.com>
Date: Sat Mar 23 12:35:27 2013 -0500
libclc: Add stub clz builtin
For scalar int/uint, attempt to use the clz llvm builtin.. for all others
return 0 until an actual implementation is finished.
---
generic/include/clc/clc.h | 1 +
generic/include/clc/integer/clz.h | 2 ++
generic/include/clc/integer/clz.inc | 1 +
generic/lib/SOURCES | 3 ++
generic/lib/integer/clz.cl | 52 +++++++++++++++++++++++++++++++++
generic/lib/integer/clz_if.ll | 55 +++++++++++++++++++++++++++++++++++
generic/lib/integer/clz_impl.ll | 44 ++++++++++++++++++++++++++++
7 files changed, 158 insertions(+)
create mode 100644 generic/include/clc/integer/clz.h
create mode 100644 generic/include/clc/integer/clz.inc
create mode 100644 generic/lib/integer/clz.cl
create mode 100644 generic/lib/integer/clz_if.ll
create mode 100644 generic/lib/integer/clz_impl.ll
diff --git a/generic/include/clc/clc.h b/generic/include/clc/clc.h
index 72f518a..0d7f105 100644
--- a/generic/include/clc/clc.h
+++ b/generic/include/clc/clc.h
@@ -63,6 +63,7 @@
#include <clc/integer/abs.h>
#include <clc/integer/abs_diff.h>
#include <clc/integer/add_sat.h>
+#include <clc/integer/clz.h>
#include <clc/integer/rotate.h>
#include <clc/integer/sub_sat.h>
diff --git a/generic/include/clc/integer/clz.h b/generic/include/clc/integer/clz.h
new file mode 100644
index 0000000..5708eb4
--- /dev/null
+++ b/generic/include/clc/integer/clz.h
@@ -0,0 +1,2 @@
+#define BODY <clc/integer/clz.inc>
+#include <clc/integer/gentype.inc>
diff --git a/generic/include/clc/integer/clz.inc b/generic/include/clc/integer/clz.inc
new file mode 100644
index 0000000..ac73a31
--- /dev/null
+++ b/generic/include/clc/integer/clz.inc
@@ -0,0 +1 @@
+_CLC_OVERLOAD _CLC_DECL GENTYPE clz(GENTYPE x);
diff --git a/generic/lib/SOURCES b/generic/lib/SOURCES
index 495b3e7..b04d3b8 100644
--- a/generic/lib/SOURCES
+++ b/generic/lib/SOURCES
@@ -8,6 +8,9 @@ integer/abs_diff.cl
integer/add_sat.cl
integer/add_sat.ll
integer/add_sat_impl.ll
+integer/clz.cl
+integer/clz_if.ll
+integer/clz_impl.ll
integer/rotate.cl
integer/sub_sat.cl
integer/sub_sat.ll
diff --git a/generic/lib/integer/clz.cl b/generic/lib/integer/clz.cl
new file mode 100644
index 0000000..83ef2dd
--- /dev/null
+++ b/generic/lib/integer/clz.cl
@@ -0,0 +1,52 @@
+#include <clc/clc.h>
+
+// From clz.ll
+_CLC_DECL char __clc_clz_s8(char);
+_CLC_DECL uchar __clc_clz_u8(uchar);
+_CLC_DECL short __clc_clz_s16(short);
+_CLC_DECL ushort __clc_clz_u16(ushort);
+_CLC_DECL int __clc_clz_s32(int);
+_CLC_DECL uint __clc_clz_u32(uint);
+_CLC_DECL long __clc_clz_s64(long);
+_CLC_DECL ulong __clc_clz_u64(ulong);
+
+_CLC_OVERLOAD _CLC_DEF char clz(char x) {
+ return __clc_clz_s8(x);
+}
+
+_CLC_OVERLOAD _CLC_DEF uchar clz(uchar x) {
+ return __clc_clz_u8(x);
+}
+
+_CLC_OVERLOAD _CLC_DEF short clz(short x) {
+ return __clc_clz_s16(x);
+}
+
+_CLC_OVERLOAD _CLC_DEF ushort clz(ushort x) {
+ return __clc_clz_u16(x);
+}
+
+_CLC_OVERLOAD _CLC_DEF int clz(int x) {
+ return __clc_clz_s32(x);
+}
+
+_CLC_OVERLOAD _CLC_DEF uint clz(uint x) {
+ return __clc_clz_u32(x);
+}
+
+_CLC_OVERLOAD _CLC_DEF long clz(long x) {
+ return __clc_clz_s64(x);
+}
+
+_CLC_OVERLOAD _CLC_DEF ulong clz(ulong x) {
+ return __clc_clz_u64(x);
+}
+
+_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, char, clz, char)
+_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, uchar, clz, uchar)
+_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, short, clz, short)
+_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, ushort, clz, ushort)
+_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, int, clz, int)
+_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, uint, clz, uint)
+_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, long, clz, long)
+_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, ulong, clz, ulong)
diff --git a/generic/lib/integer/clz_if.ll b/generic/lib/integer/clz_if.ll
new file mode 100644
index 0000000..23dfc74
--- /dev/null
+++ b/generic/lib/integer/clz_if.ll
@@ -0,0 +1,55 @@
+declare i8 @__clc_clz_impl_s8(i8 %x)
+
+define i8 @__clc_clz_s8(i8 %x) nounwind readnone alwaysinline {
+ %call = call i8 @__clc_clz_impl_s8(i8 %x)
+ ret i8 %call
+}
+
+declare i8 @__clc_clz_impl_u8(i8 %x)
+
+define i8 @__clc_clz_u8(i8 %x) nounwind readnone alwaysinline {
+ %call = call i8 @__clc_clz_impl_u8(i8 %x)
+ ret i8 %call
+}
+
+declare i16 @__clc_clz_impl_s16(i16 %x)
+
+define i16 @__clc_clz_s16(i16 %x) nounwind readnone alwaysinline {
+ %call = call i16 @__clc_clz_impl_s16(i16 %x)
+ ret i16 %call
+}
+
+declare i16 @__clc_clz_impl_u16(i16 %x)
+
+define i16 @__clc_clz_u16(i16 %x) nounwind readnone alwaysinline {
+ %call = call i16 @__clc_clz_impl_u16(i16 %x)
+ ret i16 %call
+}
+
+declare i32 @__clc_clz_impl_s32(i32 %x)
+
+define i32 @__clc_clz_s32(i32 %x) nounwind readnone alwaysinline {
+ %call = call i32 @__clc_clz_impl_s32(i32 %x)
+ ret i32 %call
+}
+
+declare i32 @__clc_clz_impl_u32(i32 %x)
+
+define i32 @__clc_clz_u32(i32 %x) nounwind readnone alwaysinline {
+ %call = call i32 @__clc_clz_impl_u32(i32 %x)
+ ret i32 %call
+}
+
+declare i64 @__clc_clz_impl_s64(i64 %x)
+
+define i64 @__clc_clz_s64(i64 %x) nounwind readnone alwaysinline {
+ %call = call i64 @__clc_clz_impl_s64(i64 %x)
+ ret i64 %call
+}
+
+declare i64 @__clc_clz_impl_u64(i64 %x)
+
+define i64 @__clc_clz_u64(i64 %x) nounwind readnone alwaysinline {
+ %call = call i64 @__clc_clz_impl_u64(i64 %x)
+ ret i64 %call
+}
diff --git a/generic/lib/integer/clz_impl.ll b/generic/lib/integer/clz_impl.ll
new file mode 100644
index 0000000..b5c3d98
--- /dev/null
+++ b/generic/lib/integer/clz_impl.ll
@@ -0,0 +1,44 @@
+declare i8 @llvm.ctlz.i8(i8, i1)
+declare i16 @llvm.ctlz.i16(i16, i1)
+declare i32 @llvm.ctlz.i32(i32, i1)
+declare i64 @llvm.ctlz.i64(i64, i1)
+
+define i8 @__clc_clz_impl_s8(i8 %x) nounwind readnone alwaysinline {
+ %call = call i8 @llvm.ctlz.i8(i8 %x, i1 0)
+ ret i8 %call
+}
+
+define i8 @__clc_clz_impl_u8(i8 %x) nounwind readnone alwaysinline {
+ %call = call i8 @llvm.ctlz.i8(i8 %x, i1 0)
+ ret i8 %call
+}
+
+define i16 @__clc_clz_impl_s16(i16 %x) nounwind readnone alwaysinline {
+ %call = call i16 @llvm.ctlz.i16(i16 %x, i1 0)
+ ret i16 %call
+}
+
+define i16 @__clc_clz_impl_u16(i16 %x) nounwind readnone alwaysinline {
+ %call = call i16 @llvm.ctlz.i16(i16 %x, i1 0)
+ ret i16 %call
+}
+
+define i32 @__clc_clz_impl_s32(i32 %x) nounwind readnone alwaysinline {
+ %call = call i32 @llvm.ctlz.i32(i32 %x, i1 0)
+ ret i32 %call
+}
+
+define i32 @__clc_clz_impl_u32(i32 %x) nounwind readnone alwaysinline {
+ %call = call i32 @llvm.ctlz.i32(i32 %x, i1 0)
+ ret i32 %call
+}
+
+define i64 @__clc_clz_impl_s64(i64 %x) nounwind readnone alwaysinline {
+ %call = call i64 @llvm.ctlz.i64(i64 %x, i1 0)
+ ret i64 %call
+}
+
+define i64 @__clc_clz_impl_u64(i64 %x) nounwind readnone alwaysinline {
+ %call = call i64 @llvm.ctlz.i64(i64 %x, i1 0)
+ ret i64 %call
+}
--
1.7.10.4
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