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llvm-project/llvm/test/CodeGen/SystemZ/cond-load-01.ll

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[SystemZ] Add LOC and LOCG As with the stores, these instructions can trap when the condition is false, so they are only used for things like (cond ? x : *ptr). llvm-svn: 187112
2013-07-25 17:04:52 +08:00
; Test LOC.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
[SystemZ] Improve use of conditional instructions This patch moves formation of LOC-type instructions from (late) IfConversion to the early if-conversion pass, and in some cases additionally creates them directly from select instructions during DAG instruction selection. To make early if-conversion work, the patch implements the canInsertSelect / insertSelect callbacks. It also implements the commuteInstructionImpl and FoldImmediate callbacks to enable generation of the full range of LOC instructions. Finally, the patch adds support for all instructions of the load-store-on-condition-2 facility, which allows using LOC instructions also for high registers. Due to the use of the GRX32 register class to enable high registers, we now also have to handle the cases where there are still no single hardware instructions (conditional move from a low register to a high register or vice versa). These are converted back to a branch sequence after register allocation. Since the expandRAPseudos callback is not allowed to create new basic blocks, this requires a simple new pass, modelled after the ARM/AArch64 ExpandPseudos pass. Overall, this patch causes significantly more LOC-type instructions to be used, and results in a measurable performance improvement. llvm-svn: 288028
2016-11-28 21:34:08 +08:00
; Run the test again to make sure it still works the same even
; in the presence of the load-store-on-condition-2 facility.
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s
[SystemZ] Add LOC and LOCG As with the stores, these instructions can trap when the condition is false, so they are only used for things like (cond ? x : *ptr). llvm-svn: 187112
2013-07-25 17:04:52 +08:00
declare i32 @foo(i32 *)
; Test the simple case.
define i32 @f1(i32 %easy, i32 *%ptr, i32 %limit) {
; CHECK-LABEL: f1:
; CHECK: clfi %r4, 42
[SystemZ] Be more careful about inverting CC masks (conditional loads) Extend r187495 to conditional loads. I split this out because the easiest way seemed to be to force a particular operand order in SystemZISelDAGToDAG.cpp. llvm-svn: 187496
2013-07-31 20:38:08 +08:00
; CHECK: loche %r2, 0(%r3)
[SystemZ] Add LOC and LOCG As with the stores, these instructions can trap when the condition is false, so they are only used for things like (cond ? x : *ptr). llvm-svn: 187112
2013-07-25 17:04:52 +08:00
; CHECK: br %r14
%cond = icmp ult i32 %limit, 42
[SystemZ] Test case formatting fixes Fix systematically wrong whitespace from a prior automated change. NFC. llvm-svn: 337542
2018-07-20 20:12:10 +08:00
%other = load i32, i32 *%ptr
[SystemZ] Add LOC and LOCG As with the stores, these instructions can trap when the condition is false, so they are only used for things like (cond ? x : *ptr). llvm-svn: 187112
2013-07-25 17:04:52 +08:00
%res = select i1 %cond, i32 %easy, i32 %other
ret i32 %res
}
; ...and again with the operands swapped.
define i32 @f2(i32 %easy, i32 *%ptr, i32 %limit) {
; CHECK-LABEL: f2:
; CHECK: clfi %r4, 42
; CHECK: locl %r2, 0(%r3)
; CHECK: br %r14
%cond = icmp ult i32 %limit, 42
[SystemZ] Test case formatting fixes Fix systematically wrong whitespace from a prior automated change. NFC. llvm-svn: 337542
2018-07-20 20:12:10 +08:00
%other = load i32, i32 *%ptr
[SystemZ] Add LOC and LOCG As with the stores, these instructions can trap when the condition is false, so they are only used for things like (cond ? x : *ptr). llvm-svn: 187112
2013-07-25 17:04:52 +08:00
%res = select i1 %cond, i32 %other, i32 %easy
ret i32 %res
}
; Check the high end of the aligned LOC range.
define i32 @f3(i32 %easy, i32 *%base, i32 %limit) {
; CHECK-LABEL: f3:
; CHECK: clfi %r4, 42
[SystemZ] Be more careful about inverting CC masks (conditional loads) Extend r187495 to conditional loads. I split this out because the easiest way seemed to be to force a particular operand order in SystemZISelDAGToDAG.cpp. llvm-svn: 187496
2013-07-31 20:38:08 +08:00
; CHECK: loche %r2, 524284(%r3)
[SystemZ] Add LOC and LOCG As with the stores, these instructions can trap when the condition is false, so they are only used for things like (cond ? x : *ptr). llvm-svn: 187112
2013-07-25 17:04:52 +08:00
; CHECK: br %r14
[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
%ptr = getelementptr i32, i32 *%base, i64 131071
[SystemZ] Add LOC and LOCG As with the stores, these instructions can trap when the condition is false, so they are only used for things like (cond ? x : *ptr). llvm-svn: 187112
2013-07-25 17:04:52 +08:00
%cond = icmp ult i32 %limit, 42
[SystemZ] Test case formatting fixes Fix systematically wrong whitespace from a prior automated change. NFC. llvm-svn: 337542
2018-07-20 20:12:10 +08:00
%other = load i32, i32 *%ptr
[SystemZ] Add LOC and LOCG As with the stores, these instructions can trap when the condition is false, so they are only used for things like (cond ? x : *ptr). llvm-svn: 187112
2013-07-25 17:04:52 +08:00
%res = select i1 %cond, i32 %easy, i32 %other
ret i32 %res
}
; Check the next word up. Other sequences besides this one would be OK.
define i32 @f4(i32 %easy, i32 *%base, i32 %limit) {
; CHECK-LABEL: f4:
; CHECK: agfi %r3, 524288
; CHECK: clfi %r4, 42
[SystemZ] Be more careful about inverting CC masks (conditional loads) Extend r187495 to conditional loads. I split this out because the easiest way seemed to be to force a particular operand order in SystemZISelDAGToDAG.cpp. llvm-svn: 187496
2013-07-31 20:38:08 +08:00
; CHECK: loche %r2, 0(%r3)
[SystemZ] Add LOC and LOCG As with the stores, these instructions can trap when the condition is false, so they are only used for things like (cond ? x : *ptr). llvm-svn: 187112
2013-07-25 17:04:52 +08:00
; CHECK: br %r14
[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
%ptr = getelementptr i32, i32 *%base, i64 131072
[SystemZ] Add LOC and LOCG As with the stores, these instructions can trap when the condition is false, so they are only used for things like (cond ? x : *ptr). llvm-svn: 187112
2013-07-25 17:04:52 +08:00
%cond = icmp ult i32 %limit, 42
[SystemZ] Test case formatting fixes Fix systematically wrong whitespace from a prior automated change. NFC. llvm-svn: 337542
2018-07-20 20:12:10 +08:00
%other = load i32, i32 *%ptr
[SystemZ] Add LOC and LOCG As with the stores, these instructions can trap when the condition is false, so they are only used for things like (cond ? x : *ptr). llvm-svn: 187112
2013-07-25 17:04:52 +08:00
%res = select i1 %cond, i32 %easy, i32 %other
ret i32 %res
}
; Check the low end of the LOC range.
define i32 @f5(i32 %easy, i32 *%base, i32 %limit) {
; CHECK-LABEL: f5:
; CHECK: clfi %r4, 42
[SystemZ] Be more careful about inverting CC masks (conditional loads) Extend r187495 to conditional loads. I split this out because the easiest way seemed to be to force a particular operand order in SystemZISelDAGToDAG.cpp. llvm-svn: 187496
2013-07-31 20:38:08 +08:00
; CHECK: loche %r2, -524288(%r3)
[SystemZ] Add LOC and LOCG As with the stores, these instructions can trap when the condition is false, so they are only used for things like (cond ? x : *ptr). llvm-svn: 187112
2013-07-25 17:04:52 +08:00
; CHECK: br %r14
[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
%ptr = getelementptr i32, i32 *%base, i64 -131072
[SystemZ] Add LOC and LOCG As with the stores, these instructions can trap when the condition is false, so they are only used for things like (cond ? x : *ptr). llvm-svn: 187112
2013-07-25 17:04:52 +08:00
%cond = icmp ult i32 %limit, 42
[SystemZ] Test case formatting fixes Fix systematically wrong whitespace from a prior automated change. NFC. llvm-svn: 337542
2018-07-20 20:12:10 +08:00
%other = load i32, i32 *%ptr
[SystemZ] Add LOC and LOCG As with the stores, these instructions can trap when the condition is false, so they are only used for things like (cond ? x : *ptr). llvm-svn: 187112
2013-07-25 17:04:52 +08:00
%res = select i1 %cond, i32 %easy, i32 %other
ret i32 %res
}
; Check the next word down, with the same comments as f4.
define i32 @f6(i32 %easy, i32 *%base, i32 %limit) {
; CHECK-LABEL: f6:
; CHECK: agfi %r3, -524292
; CHECK: clfi %r4, 42
[SystemZ] Be more careful about inverting CC masks (conditional loads) Extend r187495 to conditional loads. I split this out because the easiest way seemed to be to force a particular operand order in SystemZISelDAGToDAG.cpp. llvm-svn: 187496
2013-07-31 20:38:08 +08:00
; CHECK: loche %r2, 0(%r3)
[SystemZ] Add LOC and LOCG As with the stores, these instructions can trap when the condition is false, so they are only used for things like (cond ? x : *ptr). llvm-svn: 187112
2013-07-25 17:04:52 +08:00
; CHECK: br %r14
[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
%ptr = getelementptr i32, i32 *%base, i64 -131073
[SystemZ] Add LOC and LOCG As with the stores, these instructions can trap when the condition is false, so they are only used for things like (cond ? x : *ptr). llvm-svn: 187112
2013-07-25 17:04:52 +08:00
%cond = icmp ult i32 %limit, 42
[SystemZ] Test case formatting fixes Fix systematically wrong whitespace from a prior automated change. NFC. llvm-svn: 337542
2018-07-20 20:12:10 +08:00
%other = load i32, i32 *%ptr
[SystemZ] Add LOC and LOCG As with the stores, these instructions can trap when the condition is false, so they are only used for things like (cond ? x : *ptr). llvm-svn: 187112
2013-07-25 17:04:52 +08:00
%res = select i1 %cond, i32 %easy, i32 %other
ret i32 %res
}
; Try a frame index base.
define i32 @f7(i32 %alt, i32 %limit) {
; CHECK-LABEL: f7:
; CHECK: brasl %r14, foo@PLT
[SystemZ] Be more careful about inverting CC masks (conditional loads) Extend r187495 to conditional loads. I split this out because the easiest way seemed to be to force a particular operand order in SystemZISelDAGToDAG.cpp. llvm-svn: 187496
2013-07-31 20:38:08 +08:00
; CHECK: loche %r2, {{[0-9]+}}(%r15)
[SystemZ] Add LOC and LOCG As with the stores, these instructions can trap when the condition is false, so they are only used for things like (cond ? x : *ptr). llvm-svn: 187112
2013-07-25 17:04:52 +08:00
; CHECK: br %r14
%ptr = alloca i32
%easy = call i32 @foo(i32 *%ptr)
%cond = icmp ult i32 %limit, 42
[SystemZ] Test case formatting fixes Fix systematically wrong whitespace from a prior automated change. NFC. llvm-svn: 337542
2018-07-20 20:12:10 +08:00
%other = load i32, i32 *%ptr
[SystemZ] Add LOC and LOCG As with the stores, these instructions can trap when the condition is false, so they are only used for things like (cond ? x : *ptr). llvm-svn: 187112
2013-07-25 17:04:52 +08:00
%res = select i1 %cond, i32 %easy, i32 %other
ret i32 %res
}
; Try a case when an index is involved.
define i32 @f8(i32 %easy, i32 %limit, i64 %base, i64 %index) {
; CHECK-LABEL: f8:
; CHECK: clfi %r3, 42
[SystemZ] Be more careful about inverting CC masks (conditional loads) Extend r187495 to conditional loads. I split this out because the easiest way seemed to be to force a particular operand order in SystemZISelDAGToDAG.cpp. llvm-svn: 187496
2013-07-31 20:38:08 +08:00
; CHECK: loche %r2, 0({{%r[1-5]}})
[SystemZ] Add LOC and LOCG As with the stores, these instructions can trap when the condition is false, so they are only used for things like (cond ? x : *ptr). llvm-svn: 187112
2013-07-25 17:04:52 +08:00
; CHECK: br %r14
%add = add i64 %base, %index
%ptr = inttoptr i64 %add to i32 *
%cond = icmp ult i32 %limit, 42
[SystemZ] Test case formatting fixes Fix systematically wrong whitespace from a prior automated change. NFC. llvm-svn: 337542
2018-07-20 20:12:10 +08:00
%other = load i32, i32 *%ptr
[SystemZ] Add LOC and LOCG As with the stores, these instructions can trap when the condition is false, so they are only used for things like (cond ? x : *ptr). llvm-svn: 187112
2013-07-25 17:04:52 +08:00
%res = select i1 %cond, i32 %easy, i32 %other
ret i32 %res
}
; Test that conditionally-executed loads do not use LOC, since it is allowed
; to trap even when the condition is false.
define i32 @f9(i32 %easy, i32 %limit, i32 *%ptr) {
; CHECK-LABEL: f9:
; CHECK-NOT: loc
; CHECK: br %r14
entry:
%cmp = icmp ule i32 %easy, %limit
br i1 %cmp, label %load, label %exit
load:
[SystemZ] Test case formatting fixes Fix systematically wrong whitespace from a prior automated change. NFC. llvm-svn: 337542
2018-07-20 20:12:10 +08:00
%other = load i32, i32 *%ptr
[SystemZ] Add LOC and LOCG As with the stores, these instructions can trap when the condition is false, so they are only used for things like (cond ? x : *ptr). llvm-svn: 187112
2013-07-25 17:04:52 +08:00
br label %exit
exit:
%res = phi i32 [ %easy, %entry ], [ %other, %load ]
ret i32 %res
}
[SystemZ] Do not use LOC(G) for volatile loads It is not safe to use LOAD ON CONDITION to implement access to a memory location marked "volatile", since the architecture leaves it unspecified whether or not an access happens if the condition is false. The current code already appears to care about that: def LOC : CondUnaryRSY<"loc", 0xEBF2, nonvolatile_load, GR32, 4>; Unfortunately, that "nonvolatile_load" operator is simply ignored by the CondUnaryRSY class, and there was no test to catch it. llvm-svn: 285077
2016-10-25 23:39:15 +08:00
; Test that volatile loads do not use LOC, since if the condition is false,
; it is unspecified whether or not the load happens. LOCR is fine though.
define i32 @f10(i32 %easy, i32 *%ptr, i32 %limit) {
; CHECK-LABEL: f10:
; CHECK: l {{%r[0-9]*}}, 0(%r3)
; CHECK: locr
; CHECK: br %r14
%cond = icmp ult i32 %limit, 42
%other = load volatile i32, i32 *%ptr
%res = select i1 %cond, i32 %easy, i32 %other
ret i32 %res
}