6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-15 20:29:48 +00:00
Code Issues Projects Releases Wiki Activity
81b61c0e50
llvm-6502/test/Transforms/InstCombine/loadstore-metadata.ll

114 lines
3.9 KiB
LLVM
Raw Normal View History

Do a better and more complete job of preserving metadata when combining loads. This handles many more cases than just the AA metadata, some of them suggested by Hal in his review of the AA metadata handling patch. I've tried to test this behavior where tractable to do so. I'll point out that I have specifically *not* included a test for debuginfo because it was going to require 2 or 3 times as much work to craft some input which would survive the "helpful" stripping of debug info metadata that doesn't match the desired schema. This is another good example of why the current state of write-ability for our debug info metadata is unacceptable. I spent over 30 minutes trying to conjure some test case that would survive, even copying from other debug info tests, but it always failed to survive with no explanation of why or how I might fix it. =[ git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220165 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-19 10:46:46 +00:00
; RUN: opt -instcombine -S < %s | FileCheck %s
[IC] Fix a bug with the instcombine canonicalizing of loads and propagating of metadata. We were propagating !nonnull metadata even when the newly formed load is no longer of a pointer type. This is clearly broken and results in LLVM failing the verifier and aborting. This patch just restricts the propagation of !nonnull metadata to when we actually have a pointer type. This bug report and the initial version of this patch was provided by Charles Davis! Many thanks for finding this! We still need to add logic to round-trip the metadata correctly if we combine from pointer types to integer types and then back by using range metadata for the integer type loads. But this is the minimal and safe version of the patch, which is important so we can backport it into 3.6. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229029 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-13 02:30:01 +00:00
target datalayout = "e-m:e-p:64:64:64-i64:64-f80:128-n8:16:32:64-S128"
Do a better and more complete job of preserving metadata when combining loads. This handles many more cases than just the AA metadata, some of them suggested by Hal in his review of the AA metadata handling patch. I've tried to test this behavior where tractable to do so. I'll point out that I have specifically *not* included a test for debuginfo because it was going to require 2 or 3 times as much work to craft some input which would survive the "helpful" stripping of debug info metadata that doesn't match the desired schema. This is another good example of why the current state of write-ability for our debug info metadata is unacceptable. I spent over 30 minutes trying to conjure some test case that would survive, even copying from other debug info tests, but it always failed to survive with no explanation of why or how I might fix it. =[ git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220165 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-19 10:46:46 +00:00
define i32 @test_load_cast_combine_tbaa(float* %ptr) {
; Ensure (cast (load (...))) -> (load (cast (...))) preserves TBAA.
; CHECK-LABEL: @test_load_cast_combine_tbaa(
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230794 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-27 21:17:42 +00:00
; CHECK: load i32, i32* %{{.*}}, !tbaa !0
Do a better and more complete job of preserving metadata when combining loads. This handles many more cases than just the AA metadata, some of them suggested by Hal in his review of the AA metadata handling patch. I've tried to test this behavior where tractable to do so. I'll point out that I have specifically *not* included a test for debuginfo because it was going to require 2 or 3 times as much work to craft some input which would survive the "helpful" stripping of debug info metadata that doesn't match the desired schema. This is another good example of why the current state of write-ability for our debug info metadata is unacceptable. I spent over 30 minutes trying to conjure some test case that would survive, even copying from other debug info tests, but it always failed to survive with no explanation of why or how I might fix it. =[ git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220165 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-19 10:46:46 +00:00
entry:
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230794 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-27 21:17:42 +00:00
%l = load float, float* %ptr, !tbaa !0
Do a better and more complete job of preserving metadata when combining loads. This handles many more cases than just the AA metadata, some of them suggested by Hal in his review of the AA metadata handling patch. I've tried to test this behavior where tractable to do so. I'll point out that I have specifically *not* included a test for debuginfo because it was going to require 2 or 3 times as much work to craft some input which would survive the "helpful" stripping of debug info metadata that doesn't match the desired schema. This is another good example of why the current state of write-ability for our debug info metadata is unacceptable. I spent over 30 minutes trying to conjure some test case that would survive, even copying from other debug info tests, but it always failed to survive with no explanation of why or how I might fix it. =[ git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220165 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-19 10:46:46 +00:00
%c = bitcast float %l to i32
ret i32 %c
}
define i32 @test_load_cast_combine_noalias(float* %ptr) {
; Ensure (cast (load (...))) -> (load (cast (...))) preserves no-alias metadata.
; CHECK-LABEL: @test_load_cast_combine_noalias(
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230794 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-27 21:17:42 +00:00
; CHECK: load i32, i32* %{{.*}}, !alias.scope !2, !noalias !1
Do a better and more complete job of preserving metadata when combining loads. This handles many more cases than just the AA metadata, some of them suggested by Hal in his review of the AA metadata handling patch. I've tried to test this behavior where tractable to do so. I'll point out that I have specifically *not* included a test for debuginfo because it was going to require 2 or 3 times as much work to craft some input which would survive the "helpful" stripping of debug info metadata that doesn't match the desired schema. This is another good example of why the current state of write-ability for our debug info metadata is unacceptable. I spent over 30 minutes trying to conjure some test case that would survive, even copying from other debug info tests, but it always failed to survive with no explanation of why or how I might fix it. =[ git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220165 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-19 10:46:46 +00:00
entry:
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230794 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-27 21:17:42 +00:00
%l = load float, float* %ptr, !alias.scope !2, !noalias !1
Do a better and more complete job of preserving metadata when combining loads. This handles many more cases than just the AA metadata, some of them suggested by Hal in his review of the AA metadata handling patch. I've tried to test this behavior where tractable to do so. I'll point out that I have specifically *not* included a test for debuginfo because it was going to require 2 or 3 times as much work to craft some input which would survive the "helpful" stripping of debug info metadata that doesn't match the desired schema. This is another good example of why the current state of write-ability for our debug info metadata is unacceptable. I spent over 30 minutes trying to conjure some test case that would survive, even copying from other debug info tests, but it always failed to survive with no explanation of why or how I might fix it. =[ git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220165 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-19 10:46:46 +00:00
%c = bitcast float %l to i32
ret i32 %c
}
define float @test_load_cast_combine_range(i32* %ptr) {
; Ensure (cast (load (...))) -> (load (cast (...))) drops range metadata. It
; would be nice to preserve or update it somehow but this is hard when moving
; between types.
; CHECK-LABEL: @test_load_cast_combine_range(
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230794 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-27 21:17:42 +00:00
; CHECK: load float, float* %{{.*}}
Do a better and more complete job of preserving metadata when combining loads. This handles many more cases than just the AA metadata, some of them suggested by Hal in his review of the AA metadata handling patch. I've tried to test this behavior where tractable to do so. I'll point out that I have specifically *not* included a test for debuginfo because it was going to require 2 or 3 times as much work to craft some input which would survive the "helpful" stripping of debug info metadata that doesn't match the desired schema. This is another good example of why the current state of write-ability for our debug info metadata is unacceptable. I spent over 30 minutes trying to conjure some test case that would survive, even copying from other debug info tests, but it always failed to survive with no explanation of why or how I might fix it. =[ git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220165 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-19 10:46:46 +00:00
; CHECK-NOT: !range
; CHECK: ret float
entry:
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230794 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-27 21:17:42 +00:00
%l = load i32, i32* %ptr, !range !5
Do a better and more complete job of preserving metadata when combining loads. This handles many more cases than just the AA metadata, some of them suggested by Hal in his review of the AA metadata handling patch. I've tried to test this behavior where tractable to do so. I'll point out that I have specifically *not* included a test for debuginfo because it was going to require 2 or 3 times as much work to craft some input which would survive the "helpful" stripping of debug info metadata that doesn't match the desired schema. This is another good example of why the current state of write-ability for our debug info metadata is unacceptable. I spent over 30 minutes trying to conjure some test case that would survive, even copying from other debug info tests, but it always failed to survive with no explanation of why or how I might fix it. =[ git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220165 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-19 10:46:46 +00:00
%c = bitcast i32 %l to float
ret float %c
}
define i32 @test_load_cast_combine_invariant(float* %ptr) {
; Ensure (cast (load (...))) -> (load (cast (...))) preserves invariant metadata.
; CHECK-LABEL: @test_load_cast_combine_invariant(
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230794 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-27 21:17:42 +00:00
; CHECK: load i32, i32* %{{.*}}, !invariant.load !3
Do a better and more complete job of preserving metadata when combining loads. This handles many more cases than just the AA metadata, some of them suggested by Hal in his review of the AA metadata handling patch. I've tried to test this behavior where tractable to do so. I'll point out that I have specifically *not* included a test for debuginfo because it was going to require 2 or 3 times as much work to craft some input which would survive the "helpful" stripping of debug info metadata that doesn't match the desired schema. This is another good example of why the current state of write-ability for our debug info metadata is unacceptable. I spent over 30 minutes trying to conjure some test case that would survive, even copying from other debug info tests, but it always failed to survive with no explanation of why or how I might fix it. =[ git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220165 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-19 10:46:46 +00:00
entry:
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230794 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-27 21:17:42 +00:00
%l = load float, float* %ptr, !invariant.load !3
Do a better and more complete job of preserving metadata when combining loads. This handles many more cases than just the AA metadata, some of them suggested by Hal in his review of the AA metadata handling patch. I've tried to test this behavior where tractable to do so. I'll point out that I have specifically *not* included a test for debuginfo because it was going to require 2 or 3 times as much work to craft some input which would survive the "helpful" stripping of debug info metadata that doesn't match the desired schema. This is another good example of why the current state of write-ability for our debug info metadata is unacceptable. I spent over 30 minutes trying to conjure some test case that would survive, even copying from other debug info tests, but it always failed to survive with no explanation of why or how I might fix it. =[ git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220165 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-19 10:46:46 +00:00
%c = bitcast float %l to i32
ret i32 %c
}
define i32 @test_load_cast_combine_nontemporal(float* %ptr) {
; Ensure (cast (load (...))) -> (load (cast (...))) preserves nontemporal
; metadata.
; CHECK-LABEL: @test_load_cast_combine_nontemporal(
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230794 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-27 21:17:42 +00:00
; CHECK: load i32, i32* %{{.*}}, !nontemporal !4
Do a better and more complete job of preserving metadata when combining loads. This handles many more cases than just the AA metadata, some of them suggested by Hal in his review of the AA metadata handling patch. I've tried to test this behavior where tractable to do so. I'll point out that I have specifically *not* included a test for debuginfo because it was going to require 2 or 3 times as much work to craft some input which would survive the "helpful" stripping of debug info metadata that doesn't match the desired schema. This is another good example of why the current state of write-ability for our debug info metadata is unacceptable. I spent over 30 minutes trying to conjure some test case that would survive, even copying from other debug info tests, but it always failed to survive with no explanation of why or how I might fix it. =[ git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220165 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-19 10:46:46 +00:00
entry:
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230794 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-27 21:17:42 +00:00
%l = load float, float* %ptr, !nontemporal !4
Do a better and more complete job of preserving metadata when combining loads. This handles many more cases than just the AA metadata, some of them suggested by Hal in his review of the AA metadata handling patch. I've tried to test this behavior where tractable to do so. I'll point out that I have specifically *not* included a test for debuginfo because it was going to require 2 or 3 times as much work to craft some input which would survive the "helpful" stripping of debug info metadata that doesn't match the desired schema. This is another good example of why the current state of write-ability for our debug info metadata is unacceptable. I spent over 30 minutes trying to conjure some test case that would survive, even copying from other debug info tests, but it always failed to survive with no explanation of why or how I might fix it. =[ git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220165 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-19 10:46:46 +00:00
%c = bitcast float %l to i32
ret i32 %c
}
define void @test_load_cast_combine_loop(float* %src, i32* %dst, i32 %n) {
; Ensure (cast (load (...))) -> (load (cast (...))) preserves loop access
; metadata.
; CHECK-LABEL: @test_load_cast_combine_loop(
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230794 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-27 21:17:42 +00:00
; CHECK: load i32, i32* %{{.*}}, !llvm.mem.parallel_loop_access !1
Do a better and more complete job of preserving metadata when combining loads. This handles many more cases than just the AA metadata, some of them suggested by Hal in his review of the AA metadata handling patch. I've tried to test this behavior where tractable to do so. I'll point out that I have specifically *not* included a test for debuginfo because it was going to require 2 or 3 times as much work to craft some input which would survive the "helpful" stripping of debug info metadata that doesn't match the desired schema. This is another good example of why the current state of write-ability for our debug info metadata is unacceptable. I spent over 30 minutes trying to conjure some test case that would survive, even copying from other debug info tests, but it always failed to survive with no explanation of why or how I might fix it. =[ git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220165 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-19 10:46:46 +00:00
entry:
br label %loop
loop:
%i = phi i32 [ 0, %entry ], [ %i.next, %loop ]
[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 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230786 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-27 19:29:02 +00:00
%src.gep = getelementptr inbounds float, float* %src, i32 %i
%dst.gep = getelementptr inbounds i32, i32* %dst, i32 %i
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230794 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-27 21:17:42 +00:00
%l = load float, float* %src.gep, !llvm.mem.parallel_loop_access !1
Do a better and more complete job of preserving metadata when combining loads. This handles many more cases than just the AA metadata, some of them suggested by Hal in his review of the AA metadata handling patch. I've tried to test this behavior where tractable to do so. I'll point out that I have specifically *not* included a test for debuginfo because it was going to require 2 or 3 times as much work to craft some input which would survive the "helpful" stripping of debug info metadata that doesn't match the desired schema. This is another good example of why the current state of write-ability for our debug info metadata is unacceptable. I spent over 30 minutes trying to conjure some test case that would survive, even copying from other debug info tests, but it always failed to survive with no explanation of why or how I might fix it. =[ git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220165 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-19 10:46:46 +00:00
%c = bitcast float %l to i32
store i32 %c, i32* %dst.gep
%i.next = add i32 %i, 1
%cmp = icmp slt i32 %i.next, %n
br i1 %cmp, label %loop, label %exit, !llvm.loop !1
exit:
ret void
}
[IC] Fix a bug with the instcombine canonicalizing of loads and propagating of metadata. We were propagating !nonnull metadata even when the newly formed load is no longer of a pointer type. This is clearly broken and results in LLVM failing the verifier and aborting. This patch just restricts the propagation of !nonnull metadata to when we actually have a pointer type. This bug report and the initial version of this patch was provided by Charles Davis! Many thanks for finding this! We still need to add logic to round-trip the metadata correctly if we combine from pointer types to integer types and then back by using range metadata for the integer type loads. But this is the minimal and safe version of the patch, which is important so we can backport it into 3.6. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229029 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-13 02:30:01 +00:00
define void @test_load_cast_combine_nonnull(float** %ptr) {
; We can't preserve nonnull metadata when converting a load of a pointer to
[IC] Turn non-null MD on pointer loads to range MD on integer loads. Summary: This change fixes the FIXME that you recently added when you committed (a modified version of) my patch. When `InstCombine` combines a load and store of an pointer to those of an equivalently-sized integer, it currently drops any `!nonnull` metadata that might be present. This change replaces `!nonnull` metadata with `!range !{ 1, -1 }` metadata instead. Reviewers: chandlerc Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D7621 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230462 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-25 05:10:25 +00:00
; a load of an integer. Instead, we translate it to range metadata.
; FIXME: We should also transform range metadata back into nonnull metadata.
; FIXME: This test is very fragile. If any LABEL lines are added after
; this point, the test will fail, because this test depends on a metadata tuple,
; which is always emitted at the end of the file. At some point, we should
; consider an option to the IR printer to emit MD tuples after the function
; that first uses them--this will allow us to refer to them like this and not
; have the tests break. For now, this function must always come last in this
; file, and no LABEL lines are to be added after this point.
[IC] Fix a bug with the instcombine canonicalizing of loads and propagating of metadata. We were propagating !nonnull metadata even when the newly formed load is no longer of a pointer type. This is clearly broken and results in LLVM failing the verifier and aborting. This patch just restricts the propagation of !nonnull metadata to when we actually have a pointer type. This bug report and the initial version of this patch was provided by Charles Davis! Many thanks for finding this! We still need to add logic to round-trip the metadata correctly if we combine from pointer types to integer types and then back by using range metadata for the integer type loads. But this is the minimal and safe version of the patch, which is important so we can backport it into 3.6. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229029 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-13 02:30:01 +00:00
;
; CHECK-LABEL: @test_load_cast_combine_nonnull(
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230794 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-27 21:17:42 +00:00
; CHECK: %[[V:.*]] = load i64, i64* %{{.*}}, !range ![[MD:[0-9]+]]
[IC] Fix a bug with the instcombine canonicalizing of loads and propagating of metadata. We were propagating !nonnull metadata even when the newly formed load is no longer of a pointer type. This is clearly broken and results in LLVM failing the verifier and aborting. This patch just restricts the propagation of !nonnull metadata to when we actually have a pointer type. This bug report and the initial version of this patch was provided by Charles Davis! Many thanks for finding this! We still need to add logic to round-trip the metadata correctly if we combine from pointer types to integer types and then back by using range metadata for the integer type loads. But this is the minimal and safe version of the patch, which is important so we can backport it into 3.6. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229029 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-13 02:30:01 +00:00
; CHECK-NOT: !nonnull
; CHECK: store i64 %[[V]], i64*
entry:
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230794 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-27 21:17:42 +00:00
%p = load float*, float** %ptr, !nonnull !3
[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 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230786 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-27 19:29:02 +00:00
%gep = getelementptr float*, float** %ptr, i32 42
[IC] Fix a bug with the instcombine canonicalizing of loads and propagating of metadata. We were propagating !nonnull metadata even when the newly formed load is no longer of a pointer type. This is clearly broken and results in LLVM failing the verifier and aborting. This patch just restricts the propagation of !nonnull metadata to when we actually have a pointer type. This bug report and the initial version of this patch was provided by Charles Davis! Many thanks for finding this! We still need to add logic to round-trip the metadata correctly if we combine from pointer types to integer types and then back by using range metadata for the integer type loads. But this is the minimal and safe version of the patch, which is important so we can backport it into 3.6. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229029 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-13 02:30:01 +00:00
store float* %p, float** %gep
ret void
}
[IC] Turn non-null MD on pointer loads to range MD on integer loads. Summary: This change fixes the FIXME that you recently added when you committed (a modified version of) my patch. When `InstCombine` combines a load and store of an pointer to those of an equivalently-sized integer, it currently drops any `!nonnull` metadata that might be present. This change replaces `!nonnull` metadata with `!range !{ 1, -1 }` metadata instead. Reviewers: chandlerc Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D7621 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230462 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-25 05:10:25 +00:00
; This is the metadata tuple that we reference above:
; CHECK: ![[MD]] = !{i64 1, i64 0}
IR: Make metadata typeless in assembly Now that `Metadata` is typeless, reflect that in the assembly. These are the matching assembly changes for the metadata/value split in r223802. - Only use the `metadata` type when referencing metadata from a call intrinsic -- i.e., only when it's used as a `Value`. - Stop pretending that `ValueAsMetadata` is wrapped in an `MDNode` when referencing it from call intrinsics. So, assembly like this: define @foo(i32 %v) { call void @llvm.foo(metadata !{i32 %v}, metadata !0) call void @llvm.foo(metadata !{i32 7}, metadata !0) call void @llvm.foo(metadata !1, metadata !0) call void @llvm.foo(metadata !3, metadata !0) call void @llvm.foo(metadata !{metadata !3}, metadata !0) ret void, !bar !2 } !0 = metadata !{metadata !2} !1 = metadata !{i32* @global} !2 = metadata !{metadata !3} !3 = metadata !{} turns into this: define @foo(i32 %v) { call void @llvm.foo(metadata i32 %v, metadata !0) call void @llvm.foo(metadata i32 7, metadata !0) call void @llvm.foo(metadata i32* @global, metadata !0) call void @llvm.foo(metadata !3, metadata !0) call void @llvm.foo(metadata !{!3}, metadata !0) ret void, !bar !2 } !0 = !{!2} !1 = !{i32* @global} !2 = !{!3} !3 = !{} I wrote an upgrade script that handled almost all of the tests in llvm and many of the tests in cfe (even handling many `CHECK` lines). I've attached it (or will attach it in a moment if you're speedy) to PR21532 to help everyone update their out-of-tree testcases. This is part of PR21532. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224257 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-15 19:07:53 +00:00
!0 = !{ !1, !1, i64 0 }
!1 = !{ !1 }
!2 = !{ !2, !1 }
!3 = !{ }
!4 = !{ i32 1 }
!5 = !{ i32 0, i32 42 }
Reference in New Issue Copy Permalink