llvm-6502/test/CodeGen/SystemZ/int-move-04.ll
David Blaikie 198d8baafb [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

131 lines
3.0 KiB
LLVM

; Test 8-bit GPR stores.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
; Test an i8 store, which should get converted into an i32 truncation.
define void @f1(i8 *%dst, i8 %val) {
; CHECK-LABEL: f1:
; CHECK: stc %r3, 0(%r2)
; CHECK: br %r14
store i8 %val, i8 *%dst
ret void
}
; Test an i32 truncating store.
define void @f2(i8 *%dst, i32 %val) {
; CHECK-LABEL: f2:
; CHECK: stc %r3, 0(%r2)
; CHECK: br %r14
%trunc = trunc i32 %val to i8
store i8 %trunc, i8 *%dst
ret void
}
; Test an i64 truncating store.
define void @f3(i8 *%dst, i64 %val) {
; CHECK-LABEL: f3:
; CHECK: stc %r3, 0(%r2)
; CHECK: br %r14
%trunc = trunc i64 %val to i8
store i8 %trunc, i8 *%dst
ret void
}
; Check the high end of the STC range.
define void @f4(i8 *%dst, i8 %val) {
; CHECK-LABEL: f4:
; CHECK: stc %r3, 4095(%r2)
; CHECK: br %r14
%ptr = getelementptr i8, i8 *%dst, i64 4095
store i8 %val, i8 *%ptr
ret void
}
; Check the next byte up, which should use STCY instead of STC.
define void @f5(i8 *%dst, i8 %val) {
; CHECK-LABEL: f5:
; CHECK: stcy %r3, 4096(%r2)
; CHECK: br %r14
%ptr = getelementptr i8, i8 *%dst, i64 4096
store i8 %val, i8 *%ptr
ret void
}
; Check the high end of the STCY range.
define void @f6(i8 *%dst, i8 %val) {
; CHECK-LABEL: f6:
; CHECK: stcy %r3, 524287(%r2)
; CHECK: br %r14
%ptr = getelementptr i8, i8 *%dst, i64 524287
store i8 %val, i8 *%ptr
ret void
}
; Check the next byte up, which needs separate address logic.
; Other sequences besides this one would be OK.
define void @f7(i8 *%dst, i8 %val) {
; CHECK-LABEL: f7:
; CHECK: agfi %r2, 524288
; CHECK: stc %r3, 0(%r2)
; CHECK: br %r14
%ptr = getelementptr i8, i8 *%dst, i64 524288
store i8 %val, i8 *%ptr
ret void
}
; Check the high end of the negative STCY range.
define void @f8(i8 *%dst, i8 %val) {
; CHECK-LABEL: f8:
; CHECK: stcy %r3, -1(%r2)
; CHECK: br %r14
%ptr = getelementptr i8, i8 *%dst, i64 -1
store i8 %val, i8 *%ptr
ret void
}
; Check the low end of the STCY range.
define void @f9(i8 *%dst, i8 %val) {
; CHECK-LABEL: f9:
; CHECK: stcy %r3, -524288(%r2)
; CHECK: br %r14
%ptr = getelementptr i8, i8 *%dst, i64 -524288
store i8 %val, i8 *%ptr
ret void
}
; Check the next byte down, which needs separate address logic.
; Other sequences besides this one would be OK.
define void @f10(i8 *%dst, i8 %val) {
; CHECK-LABEL: f10:
; CHECK: agfi %r2, -524289
; CHECK: stc %r3, 0(%r2)
; CHECK: br %r14
%ptr = getelementptr i8, i8 *%dst, i64 -524289
store i8 %val, i8 *%ptr
ret void
}
; Check that STC allows an index.
define void @f11(i64 %dst, i64 %index, i8 %val) {
; CHECK-LABEL: f11:
; CHECK: stc %r4, 4095(%r3,%r2)
; CHECK: br %r14
%add1 = add i64 %dst, %index
%add2 = add i64 %add1, 4095
%ptr = inttoptr i64 %add2 to i8 *
store i8 %val, i8 *%ptr
ret void
}
; Check that STCY allows an index.
define void @f12(i64 %dst, i64 %index, i8 %val) {
; CHECK-LABEL: f12:
; CHECK: stcy %r4, 4096(%r3,%r2)
; CHECK: br %r14
%add1 = add i64 %dst, %index
%add2 = add i64 %add1, 4096
%ptr = inttoptr i64 %add2 to i8 *
store i8 %val, i8 *%ptr
ret void
}