2014-05-20 03:45:57 +08:00
|
|
|
; RUN: llc < %s -mtriple=i686-apple-darwin -mcpu=corei7-avx | FileCheck %s -check-prefix=X32 --check-prefix=CHECK
|
|
|
|
|
; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=corei7-avx | FileCheck %s -check-prefix=X64 --check-prefix=CHECK
|
2014-05-17 06:47:49 +08:00
|
|
|
|
|
|
|
|
define <4 x i32> @blendvb_fallback_v4i32(<4 x i1> %mask, <4 x i32> %x, <4 x i32> %y) {
|
|
|
|
|
; CHECK-LABEL: @blendvb_fallback_v4i32
|
[x86] Revert r218588, r218589, and r218600. These patches were pursuing
a flawed direction and causing miscompiles. Read on for details.
Fundamentally, the premise of this patch series was to map
VECTOR_SHUFFLE DAG nodes into VSELECT DAG nodes for all blends because
we are going to *have* to lower to VSELECT nodes for some blends to
trigger the instruction selection patterns of variable blend
instructions. This doesn't actually work out so well.
In order to match performance with the existing VECTOR_SHUFFLE
lowering code, we would need to re-slice the blend in order to fit it
into either the integer or floating point blends available on the ISA.
When coming from VECTOR_SHUFFLE (or other vNi1 style VSELECT sources)
this works well because the X86 backend ensures that these types of
operands to VSELECT get sign extended into '-1' and '0' for true and
false, allowing us to re-slice the bits in whatever granularity without
changing semantics.
However, if the VSELECT condition comes from some other source, for
example code lowering vector comparisons, it will likely only have the
required bit set -- the high bit. We can't blindly slice up this style
of VSELECT. Reid found some code using Halide that triggers this and I'm
hopeful to eventually get a test case, but I don't need it to understand
why this is A Bad Idea.
There is another aspect that makes this approach flawed. When in
VECTOR_SHUFFLE form, we have very distilled information that represents
the *constant* blend mask. Converting back to a VSELECT form actually
can lose this information, and so I think now that it is better to treat
this as VECTOR_SHUFFLE until the very last moment and only use VSELECT
nodes for instruction selection purposes.
My plan is to:
1) Clean up and formalize the target pre-legalization DAG combine that
converts a VSELECT with a constant condition operand into
a VECTOR_SHUFFLE.
2) Remove any fancy lowering from VSELECT during *legalization* relying
entirely on the DAG combine to catch cases where we can match to an
immediate-controlled blend instruction.
One additional step that I'm not planning on but would be interested in
others' opinions on: we could add an X86ISD::VSELECT or X86ISD::BLENDV
which encodes a fully legalized VSELECT node. Then it would be easy to
write isel patterns only in terms of this to ensure VECTOR_SHUFFLE
legalization only ever forms the fully legalized construct and we can't
cycle between it and VSELECT combining.
llvm-svn: 218658
2014-09-30 10:52:28 +08:00
|
|
|
; CHECK: vblendvps
|
2014-05-17 06:47:49 +08:00
|
|
|
; CHECK: ret
|
|
|
|
|
%ret = select <4 x i1> %mask, <4 x i32> %x, <4 x i32> %y
|
|
|
|
|
ret <4 x i32> %ret
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
define <8 x i32> @blendvb_fallback_v8i32(<8 x i1> %mask, <8 x i32> %x, <8 x i32> %y) {
|
|
|
|
|
; CHECK-LABEL: @blendvb_fallback_v8i32
|
|
|
|
|
; CHECK: vblendvps
|
|
|
|
|
; CHECK: ret
|
|
|
|
|
%ret = select <8 x i1> %mask, <8 x i32> %x, <8 x i32> %y
|
|
|
|
|
ret <8 x i32> %ret
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
define <8 x float> @blendvb_fallback_v8f32(<8 x i1> %mask, <8 x float> %x, <8 x float> %y) {
|
|
|
|
|
; CHECK-LABEL: @blendvb_fallback_v8f32
|
|
|
|
|
; CHECK: vblendvps
|
|
|
|
|
; CHECK: ret
|
|
|
|
|
%ret = select <8 x i1> %mask, <8 x float> %x, <8 x float> %y
|
|
|
|
|
ret <8 x float> %ret
|
|
|
|
|
}
|
2014-05-20 03:45:57 +08:00
|
|
|
|
|
|
|
|
declare <4 x float> @llvm.x86.sse41.insertps(<4 x float>, <4 x float>, i32) nounwind readnone
|
|
|
|
|
|
|
|
|
|
define <4 x float> @insertps_from_vector_load(<4 x float> %a, <4 x float>* nocapture readonly %pb) {
|
|
|
|
|
; CHECK-LABEL: insertps_from_vector_load:
|
|
|
|
|
; On X32, account for the argument's move to registers
|
|
|
|
|
; X32: movl 4(%esp), %eax
|
|
|
|
|
; CHECK-NOT: mov
|
|
|
|
|
; CHECK: insertps $48
|
|
|
|
|
; CHECK-NEXT: ret
|
2015-02-28 05:17:42 +08:00
|
|
|
%1 = load <4 x float>, <4 x float>* %pb, align 16
|
2014-05-20 03:45:57 +08:00
|
|
|
%2 = tail call <4 x float> @llvm.x86.sse41.insertps(<4 x float> %a, <4 x float> %1, i32 48)
|
|
|
|
|
ret <4 x float> %2
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
;; Use a non-zero CountS for insertps
|
|
|
|
|
define <4 x float> @insertps_from_vector_load_offset(<4 x float> %a, <4 x float>* nocapture readonly %pb) {
|
|
|
|
|
; CHECK-LABEL: insertps_from_vector_load_offset:
|
|
|
|
|
; On X32, account for the argument's move to registers
|
|
|
|
|
; X32: movl 4(%esp), %eax
|
|
|
|
|
; CHECK-NOT: mov
|
|
|
|
|
;; Try to match a bit more of the instr, since we need the load's offset.
|
|
|
|
|
; CHECK: insertps $96, 4(%{{...}}), %
|
|
|
|
|
; CHECK-NEXT: ret
|
2015-02-28 05:17:42 +08:00
|
|
|
%1 = load <4 x float>, <4 x float>* %pb, align 16
|
2014-05-20 03:45:57 +08:00
|
|
|
%2 = tail call <4 x float> @llvm.x86.sse41.insertps(<4 x float> %a, <4 x float> %1, i32 96)
|
|
|
|
|
ret <4 x float> %2
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
define <4 x float> @insertps_from_vector_load_offset_2(<4 x float> %a, <4 x float>* nocapture readonly %pb, i64 %index) {
|
|
|
|
|
; CHECK-LABEL: insertps_from_vector_load_offset_2:
|
|
|
|
|
; On X32, account for the argument's move to registers
|
|
|
|
|
; X32: movl 4(%esp), %eax
|
|
|
|
|
; X32: movl 8(%esp), %ecx
|
|
|
|
|
; CHECK-NOT: mov
|
|
|
|
|
;; Try to match a bit more of the instr, since we need the load's offset.
|
2015-01-23 16:00:59 +08:00
|
|
|
; CHECK: vinsertps $192, 12(%{{...}},%{{...}}), %
|
2014-05-20 03:45:57 +08:00
|
|
|
; CHECK-NEXT: ret
|
[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction
One of several parallel first steps to remove the target type of pointers,
replacing them with a single opaque pointer type.
This adds an explicit type parameter to the gep instruction so that when the
first parameter becomes an opaque pointer type, the type to gep through is
still available to the instructions.
* This doesn't modify gep operators, only instructions (operators will be
handled separately)
* Textual IR changes only. Bitcode (including upgrade) and changing the
in-memory representation will be in separate changes.
* geps of vectors are transformed as:
getelementptr <4 x float*> %x, ...
->getelementptr float, <4 x float*> %x, ...
Then, once the opaque pointer type is introduced, this will ultimately look
like:
getelementptr float, <4 x ptr> %x
with the unambiguous interpretation that it is a vector of pointers to float.
* address spaces remain on the pointer, not the type:
getelementptr float addrspace(1)* %x
->getelementptr float, float addrspace(1)* %x
Then, eventually:
getelementptr float, ptr addrspace(1) %x
Importantly, the massive amount of test case churn has been automated by
same crappy python code. I had to manually update a few test cases that
wouldn't fit the script's model (r228970,r229196,r229197,r229198). The
python script just massages stdin and writes the result to stdout, I
then wrapped that in a shell script to handle replacing files, then
using the usual find+xargs to migrate all the files.
update.py:
import fileinput
import sys
import re
ibrep = re.compile(r"(^.*?[^%\w]getelementptr inbounds )(((?:<\d* x )?)(.*?)(| addrspace\(\d\)) *\*(|>)(?:$| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$))")
normrep = re.compile( r"(^.*?[^%\w]getelementptr )(((?:<\d* x )?)(.*?)(| addrspace\(\d\)) *\*(|>)(?:$| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$))")
def conv(match, line):
if not match:
return line
line = match.groups()[0]
if len(match.groups()[5]) == 0:
line += match.groups()[2]
line += match.groups()[3]
line += ", "
line += match.groups()[1]
line += "\n"
return line
for line in sys.stdin:
if line.find("getelementptr ") == line.find("getelementptr inbounds"):
if line.find("getelementptr inbounds") != line.find("getelementptr inbounds ("):
line = conv(re.match(ibrep, line), line)
elif line.find("getelementptr ") != line.find("getelementptr ("):
line = conv(re.match(normrep, line), line)
sys.stdout.write(line)
apply.sh:
for name in "$@"
do
python3 `dirname "$0"`/update.py < "$name" > "$name.tmp" && mv "$name.tmp" "$name"
rm -f "$name.tmp"
done
The actual commands:
From llvm/src:
find test/ -name *.ll | xargs ./apply.sh
From llvm/src/tools/clang:
find test/ -name *.mm -o -name *.m -o -name *.cpp -o -name *.c | xargs -I '{}' ../../apply.sh "{}"
From llvm/src/tools/polly:
find test/ -name *.ll | xargs ./apply.sh
After that, check-all (with llvm, clang, clang-tools-extra, lld,
compiler-rt, and polly all checked out).
The extra 'rm' in the apply.sh script is due to a few files in clang's test
suite using interesting unicode stuff that my python script was throwing
exceptions on. None of those files needed to be migrated, so it seemed
sufficient to ignore those cases.
Reviewers: rafael, dexonsmith, grosser
Differential Revision: http://reviews.llvm.org/D7636
llvm-svn: 230786
2015-02-28 03:29:02 +08:00
|
|
|
%1 = getelementptr inbounds <4 x float>, <4 x float>* %pb, i64 %index
|
2015-02-28 05:17:42 +08:00
|
|
|
%2 = load <4 x float>, <4 x float>* %1, align 16
|
2014-05-20 03:45:57 +08:00
|
|
|
%3 = tail call <4 x float> @llvm.x86.sse41.insertps(<4 x float> %a, <4 x float> %2, i32 192)
|
|
|
|
|
ret <4 x float> %3
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
define <4 x float> @insertps_from_broadcast_loadf32(<4 x float> %a, float* nocapture readonly %fb, i64 %index) {
|
|
|
|
|
; CHECK-LABEL: insertps_from_broadcast_loadf32:
|
|
|
|
|
; On X32, account for the arguments' move to registers
|
|
|
|
|
; X32: movl 8(%esp), %eax
|
|
|
|
|
; X32: movl 4(%esp), %ecx
|
|
|
|
|
; CHECK-NOT: mov
|
|
|
|
|
; CHECK: insertps $48
|
|
|
|
|
; CHECK-NEXT: ret
|
[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction
One of several parallel first steps to remove the target type of pointers,
replacing them with a single opaque pointer type.
This adds an explicit type parameter to the gep instruction so that when the
first parameter becomes an opaque pointer type, the type to gep through is
still available to the instructions.
* This doesn't modify gep operators, only instructions (operators will be
handled separately)
* Textual IR changes only. Bitcode (including upgrade) and changing the
in-memory representation will be in separate changes.
* geps of vectors are transformed as:
getelementptr <4 x float*> %x, ...
->getelementptr float, <4 x float*> %x, ...
Then, once the opaque pointer type is introduced, this will ultimately look
like:
getelementptr float, <4 x ptr> %x
with the unambiguous interpretation that it is a vector of pointers to float.
* address spaces remain on the pointer, not the type:
getelementptr float addrspace(1)* %x
->getelementptr float, float addrspace(1)* %x
Then, eventually:
getelementptr float, ptr addrspace(1) %x
Importantly, the massive amount of test case churn has been automated by
same crappy python code. I had to manually update a few test cases that
wouldn't fit the script's model (r228970,r229196,r229197,r229198). The
python script just massages stdin and writes the result to stdout, I
then wrapped that in a shell script to handle replacing files, then
using the usual find+xargs to migrate all the files.
update.py:
import fileinput
import sys
import re
ibrep = re.compile(r"(^.*?[^%\w]getelementptr inbounds )(((?:<\d* x )?)(.*?)(| addrspace\(\d\)) *\*(|>)(?:$| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$))")
normrep = re.compile( r"(^.*?[^%\w]getelementptr )(((?:<\d* x )?)(.*?)(| addrspace\(\d\)) *\*(|>)(?:$| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$))")
def conv(match, line):
if not match:
return line
line = match.groups()[0]
if len(match.groups()[5]) == 0:
line += match.groups()[2]
line += match.groups()[3]
line += ", "
line += match.groups()[1]
line += "\n"
return line
for line in sys.stdin:
if line.find("getelementptr ") == line.find("getelementptr inbounds"):
if line.find("getelementptr inbounds") != line.find("getelementptr inbounds ("):
line = conv(re.match(ibrep, line), line)
elif line.find("getelementptr ") != line.find("getelementptr ("):
line = conv(re.match(normrep, line), line)
sys.stdout.write(line)
apply.sh:
for name in "$@"
do
python3 `dirname "$0"`/update.py < "$name" > "$name.tmp" && mv "$name.tmp" "$name"
rm -f "$name.tmp"
done
The actual commands:
From llvm/src:
find test/ -name *.ll | xargs ./apply.sh
From llvm/src/tools/clang:
find test/ -name *.mm -o -name *.m -o -name *.cpp -o -name *.c | xargs -I '{}' ../../apply.sh "{}"
From llvm/src/tools/polly:
find test/ -name *.ll | xargs ./apply.sh
After that, check-all (with llvm, clang, clang-tools-extra, lld,
compiler-rt, and polly all checked out).
The extra 'rm' in the apply.sh script is due to a few files in clang's test
suite using interesting unicode stuff that my python script was throwing
exceptions on. None of those files needed to be migrated, so it seemed
sufficient to ignore those cases.
Reviewers: rafael, dexonsmith, grosser
Differential Revision: http://reviews.llvm.org/D7636
llvm-svn: 230786
2015-02-28 03:29:02 +08:00
|
|
|
%1 = getelementptr inbounds float, float* %fb, i64 %index
|
2015-02-28 05:17:42 +08:00
|
|
|
%2 = load float, float* %1, align 4
|
2014-05-20 03:45:57 +08:00
|
|
|
%3 = insertelement <4 x float> undef, float %2, i32 0
|
|
|
|
|
%4 = insertelement <4 x float> %3, float %2, i32 1
|
|
|
|
|
%5 = insertelement <4 x float> %4, float %2, i32 2
|
|
|
|
|
%6 = insertelement <4 x float> %5, float %2, i32 3
|
|
|
|
|
%7 = tail call <4 x float> @llvm.x86.sse41.insertps(<4 x float> %a, <4 x float> %6, i32 48)
|
|
|
|
|
ret <4 x float> %7
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
define <4 x float> @insertps_from_broadcast_loadv4f32(<4 x float> %a, <4 x float>* nocapture readonly %b) {
|
|
|
|
|
; CHECK-LABEL: insertps_from_broadcast_loadv4f32:
|
|
|
|
|
; On X32, account for the arguments' move to registers
|
|
|
|
|
; X32: movl 4(%esp), %{{...}}
|
|
|
|
|
; CHECK-NOT: mov
|
|
|
|
|
; CHECK: insertps $48
|
|
|
|
|
; CHECK-NEXT: ret
|
2015-02-28 05:17:42 +08:00
|
|
|
%1 = load <4 x float>, <4 x float>* %b, align 4
|
2014-05-20 03:45:57 +08:00
|
|
|
%2 = extractelement <4 x float> %1, i32 0
|
|
|
|
|
%3 = insertelement <4 x float> undef, float %2, i32 0
|
|
|
|
|
%4 = insertelement <4 x float> %3, float %2, i32 1
|
|
|
|
|
%5 = insertelement <4 x float> %4, float %2, i32 2
|
|
|
|
|
%6 = insertelement <4 x float> %5, float %2, i32 3
|
|
|
|
|
%7 = tail call <4 x float> @llvm.x86.sse41.insertps(<4 x float> %a, <4 x float> %6, i32 48)
|
|
|
|
|
ret <4 x float> %7
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
;; FIXME: We're emitting an extraneous pshufd/vbroadcast.
|
|
|
|
|
define <4 x float> @insertps_from_broadcast_multiple_use(<4 x float> %a, <4 x float> %b, <4 x float> %c, <4 x float> %d, float* nocapture readonly %fb, i64 %index) {
|
|
|
|
|
; CHECK-LABEL: insertps_from_broadcast_multiple_use:
|
|
|
|
|
; On X32, account for the arguments' move to registers
|
|
|
|
|
; X32: movl 8(%esp), %eax
|
|
|
|
|
; X32: movl 4(%esp), %ecx
|
|
|
|
|
; CHECK: vbroadcastss
|
|
|
|
|
; CHECK-NOT: mov
|
|
|
|
|
; CHECK: insertps $48
|
|
|
|
|
; CHECK: insertps $48
|
|
|
|
|
; CHECK: insertps $48
|
|
|
|
|
; CHECK: insertps $48
|
|
|
|
|
; CHECK: vaddps
|
|
|
|
|
; CHECK: vaddps
|
|
|
|
|
; CHECK: vaddps
|
|
|
|
|
; CHECK-NEXT: ret
|
[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction
One of several parallel first steps to remove the target type of pointers,
replacing them with a single opaque pointer type.
This adds an explicit type parameter to the gep instruction so that when the
first parameter becomes an opaque pointer type, the type to gep through is
still available to the instructions.
* This doesn't modify gep operators, only instructions (operators will be
handled separately)
* Textual IR changes only. Bitcode (including upgrade) and changing the
in-memory representation will be in separate changes.
* geps of vectors are transformed as:
getelementptr <4 x float*> %x, ...
->getelementptr float, <4 x float*> %x, ...
Then, once the opaque pointer type is introduced, this will ultimately look
like:
getelementptr float, <4 x ptr> %x
with the unambiguous interpretation that it is a vector of pointers to float.
* address spaces remain on the pointer, not the type:
getelementptr float addrspace(1)* %x
->getelementptr float, float addrspace(1)* %x
Then, eventually:
getelementptr float, ptr addrspace(1) %x
Importantly, the massive amount of test case churn has been automated by
same crappy python code. I had to manually update a few test cases that
wouldn't fit the script's model (r228970,r229196,r229197,r229198). The
python script just massages stdin and writes the result to stdout, I
then wrapped that in a shell script to handle replacing files, then
using the usual find+xargs to migrate all the files.
update.py:
import fileinput
import sys
import re
ibrep = re.compile(r"(^.*?[^%\w]getelementptr inbounds )(((?:<\d* x )?)(.*?)(| addrspace\(\d\)) *\*(|>)(?:$| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$))")
normrep = re.compile( r"(^.*?[^%\w]getelementptr )(((?:<\d* x )?)(.*?)(| addrspace\(\d\)) *\*(|>)(?:$| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$))")
def conv(match, line):
if not match:
return line
line = match.groups()[0]
if len(match.groups()[5]) == 0:
line += match.groups()[2]
line += match.groups()[3]
line += ", "
line += match.groups()[1]
line += "\n"
return line
for line in sys.stdin:
if line.find("getelementptr ") == line.find("getelementptr inbounds"):
if line.find("getelementptr inbounds") != line.find("getelementptr inbounds ("):
line = conv(re.match(ibrep, line), line)
elif line.find("getelementptr ") != line.find("getelementptr ("):
line = conv(re.match(normrep, line), line)
sys.stdout.write(line)
apply.sh:
for name in "$@"
do
python3 `dirname "$0"`/update.py < "$name" > "$name.tmp" && mv "$name.tmp" "$name"
rm -f "$name.tmp"
done
The actual commands:
From llvm/src:
find test/ -name *.ll | xargs ./apply.sh
From llvm/src/tools/clang:
find test/ -name *.mm -o -name *.m -o -name *.cpp -o -name *.c | xargs -I '{}' ../../apply.sh "{}"
From llvm/src/tools/polly:
find test/ -name *.ll | xargs ./apply.sh
After that, check-all (with llvm, clang, clang-tools-extra, lld,
compiler-rt, and polly all checked out).
The extra 'rm' in the apply.sh script is due to a few files in clang's test
suite using interesting unicode stuff that my python script was throwing
exceptions on. None of those files needed to be migrated, so it seemed
sufficient to ignore those cases.
Reviewers: rafael, dexonsmith, grosser
Differential Revision: http://reviews.llvm.org/D7636
llvm-svn: 230786
2015-02-28 03:29:02 +08:00
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%1 = getelementptr inbounds float, float* %fb, i64 %index
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2015-02-28 05:17:42 +08:00
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%2 = load float, float* %1, align 4
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2014-05-20 03:45:57 +08:00
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%3 = insertelement <4 x float> undef, float %2, i32 0
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%4 = insertelement <4 x float> %3, float %2, i32 1
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%5 = insertelement <4 x float> %4, float %2, i32 2
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%6 = insertelement <4 x float> %5, float %2, i32 3
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%7 = tail call <4 x float> @llvm.x86.sse41.insertps(<4 x float> %a, <4 x float> %6, i32 48)
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%8 = tail call <4 x float> @llvm.x86.sse41.insertps(<4 x float> %b, <4 x float> %6, i32 48)
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%9 = tail call <4 x float> @llvm.x86.sse41.insertps(<4 x float> %c, <4 x float> %6, i32 48)
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%10 = tail call <4 x float> @llvm.x86.sse41.insertps(<4 x float> %d, <4 x float> %6, i32 48)
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%11 = fadd <4 x float> %7, %8
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%12 = fadd <4 x float> %9, %10
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%13 = fadd <4 x float> %11, %12
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ret <4 x float> %13
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}
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