[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

1 files changed, 16 insertions, 16 deletions

diff --git a/llvm/test/Transforms/BBVectorize/func-alias.ll b/llvm/test/Transforms/BBVectorize/func-alias.ll
index 9d0cc07c159..cb1ea95a0b3 100644
--- a/llvm/test/Transforms/BBVectorize/func-alias.ll
+++ b/llvm/test/Transforms/BBVectorize/func-alias.ll
@@ -47,22 +47,22 @@ codeRepl80.exitStub:                              ; preds = %"<bb 34>"
   ret i1 false
 
 "<bb 34>":                                        ; preds = %newFuncRoot
-  %tmp128 = getelementptr inbounds %struct.__st_parameter_dt* %memtmp3, i32 0, i32 0
-  %tmp129 = getelementptr inbounds %struct.__st_parameter_common* %tmp128, i32 0, i32 2
+  %tmp128 = getelementptr inbounds %struct.__st_parameter_dt, %struct.__st_parameter_dt* %memtmp3, i32 0, i32 0
+  %tmp129 = getelementptr inbounds %struct.__st_parameter_common, %struct.__st_parameter_common* %tmp128, i32 0, i32 2
   store i8* getelementptr inbounds ([11 x i8]* @.cst4, i64 0, i64 0), i8** %tmp129, align 8
-  %tmp130 = getelementptr inbounds %struct.__st_parameter_dt* %memtmp3, i32 0, i32 0
-  %tmp131 = getelementptr inbounds %struct.__st_parameter_common* %tmp130, i32 0, i32 3
+  %tmp130 = getelementptr inbounds %struct.__st_parameter_dt, %struct.__st_parameter_dt* %memtmp3, i32 0, i32 0
+  %tmp131 = getelementptr inbounds %struct.__st_parameter_common, %struct.__st_parameter_common* %tmp130, i32 0, i32 3
   store i32 31495, i32* %tmp131, align 4
-  %tmp132 = getelementptr inbounds %struct.__st_parameter_dt* %memtmp3, i32 0, i32 5
+  %tmp132 = getelementptr inbounds %struct.__st_parameter_dt, %struct.__st_parameter_dt* %memtmp3, i32 0, i32 5
   store i8* getelementptr inbounds ([214 x i8]* @.cst823, i64 0, i64 0), i8** %tmp132, align 8
-  %tmp133 = getelementptr inbounds %struct.__st_parameter_dt* %memtmp3, i32 0, i32 6
+  %tmp133 = getelementptr inbounds %struct.__st_parameter_dt, %struct.__st_parameter_dt* %memtmp3, i32 0, i32 6
   store i32 214, i32* %tmp133, align 4
-  %tmp134 = getelementptr inbounds %struct.__st_parameter_dt* %memtmp3, i32 0, i32 0
-  %tmp135 = getelementptr inbounds %struct.__st_parameter_common* %tmp134, i32 0, i32 0
+  %tmp134 = getelementptr inbounds %struct.__st_parameter_dt, %struct.__st_parameter_dt* %memtmp3, i32 0, i32 0
+  %tmp135 = getelementptr inbounds %struct.__st_parameter_common, %struct.__st_parameter_common* %tmp134, i32 0, i32 0
   store i32 4096, i32* %tmp135, align 4
   %iounit.8748_288 = load i32* @__main1_MOD_iounit, align 4
-  %tmp136 = getelementptr inbounds %struct.__st_parameter_dt* %memtmp3, i32 0, i32 0
-  %tmp137 = getelementptr inbounds %struct.__st_parameter_common* %tmp136, i32 0, i32 1
+  %tmp136 = getelementptr inbounds %struct.__st_parameter_dt, %struct.__st_parameter_dt* %memtmp3, i32 0, i32 0
+  %tmp137 = getelementptr inbounds %struct.__st_parameter_common, %struct.__st_parameter_common* %tmp136, i32 0, i32 1
   store i32 %iounit.8748_288, i32* %tmp137, align 4
   call void @_gfortran_st_write(%struct.__st_parameter_dt* %memtmp3) nounwind
   call void bitcast (void (%struct.__st_parameter_dt*, i8*, i32)* @_gfortran_transfer_integer_write to void (%struct.__st_parameter_dt*, i32*, i32)*)(%struct.__st_parameter_dt* %memtmp3, i32* @j.4580, i32 4) nounwind
@@ -89,7 +89,7 @@ codeRepl80.exitStub:                              ; preds = %"<bb 34>"
   %D.75818_308 = add nsw i64 %D.75816_306, %D.75817_307
   %tmp138 = bitcast i8* %D.75807_289 to [0 x float]*
   %tmp139 = bitcast [0 x float]* %tmp138 to float*
-  %D.75819_309 = getelementptr inbounds float* %tmp139, i64 %D.75818_308
+  %D.75819_309 = getelementptr inbounds float, float* %tmp139, i64 %D.75818_308
   call void bitcast (void (%struct.__st_parameter_dt*, i8*, i32)* @_gfortran_transfer_real_write to void (%struct.__st_parameter_dt*, float*, i32)*)(%struct.__st_parameter_dt* %memtmp3, float* %D.75819_309, i32 4) nounwind
 ; CHECK: @_gfortran_transfer_real_write
   %D.75820_310 = load i8** getelementptr inbounds (%struct.array4_unknown* @__main1_MOD_mclmsg, i64 0, i32 0), align 8
@@ -114,7 +114,7 @@ codeRepl80.exitStub:                              ; preds = %"<bb 34>"
   %D.75831_329 = add nsw i64 %D.75829_327, %D.75830_328
   %tmp140 = bitcast i8* %D.75820_310 to [0 x [1 x i8]]*
   %tmp141 = bitcast [0 x [1 x i8]]* %tmp140 to [1 x i8]*
-  %D.75832_330 = getelementptr inbounds [1 x i8]* %tmp141, i64 %D.75831_329
+  %D.75832_330 = getelementptr inbounds [1 x i8], [1 x i8]* %tmp141, i64 %D.75831_329
   call void bitcast (void (%struct.__st_parameter_dt*, i8*, i32)* @_gfortran_transfer_character_write to void (%struct.__st_parameter_dt*, [1 x i8]*, i32)*)(%struct.__st_parameter_dt* %memtmp3, [1 x i8]* %D.75832_330, i32 1) nounwind
 ; CHECK: @_gfortran_transfer_character_write
   %D.75833_331 = load i8** getelementptr inbounds (%"struct.array4_integer(kind=4).73"* @__main1_MOD_mxdate, i64 0, i32 0), align 8
@@ -139,7 +139,7 @@ codeRepl80.exitStub:                              ; preds = %"<bb 34>"
   %D.75844_350 = add nsw i64 %D.75842_348, %D.75843_349
   %tmp142 = bitcast i8* %D.75833_331 to [0 x i32]*
   %tmp143 = bitcast [0 x i32]* %tmp142 to i32*
-  %D.75845_351 = getelementptr inbounds i32* %tmp143, i64 %D.75844_350
+  %D.75845_351 = getelementptr inbounds i32, i32* %tmp143, i64 %D.75844_350
   call void bitcast (void (%struct.__st_parameter_dt*, i8*, i32)* @_gfortran_transfer_integer_write to void (%struct.__st_parameter_dt*, i32*, i32)*)(%struct.__st_parameter_dt* %memtmp3, i32* %D.75845_351, i32 4) nounwind
 ; CHECK: @_gfortran_transfer_integer_write
   call void bitcast (void (%struct.__st_parameter_dt*, i8*, i32)* @_gfortran_transfer_real_write to void (%struct.__st_parameter_dt*, float*, i32)*)(%struct.__st_parameter_dt* %memtmp3, float* @xr1.4592, i32 4) nounwind
@@ -172,7 +172,7 @@ codeRepl80.exitStub:                              ; preds = %"<bb 34>"
   %D.75848_371 = add nsw i64 %D.75847_369, %D.75817_370
   %tmp144 = bitcast i8* %D.75807_352 to [0 x float]*
   %tmp145 = bitcast [0 x float]* %tmp144 to float*
-  %D.75849_372 = getelementptr inbounds float* %tmp145, i64 %D.75848_371
+  %D.75849_372 = getelementptr inbounds float, float* %tmp145, i64 %D.75848_371
   call void bitcast (void (%struct.__st_parameter_dt*, i8*, i32)* @_gfortran_transfer_real_write to void (%struct.__st_parameter_dt*, float*, i32)*)(%struct.__st_parameter_dt* %memtmp3, float* %D.75849_372, i32 4) nounwind
 ; CHECK: @_gfortran_transfer_real_write
   %D.75820_373 = load i8** getelementptr inbounds (%struct.array4_unknown* @__main1_MOD_mclmsg, i64 0, i32 0), align 8
@@ -197,7 +197,7 @@ codeRepl80.exitStub:                              ; preds = %"<bb 34>"
   %D.75852_392 = add nsw i64 %D.75851_390, %D.75830_391
   %tmp146 = bitcast i8* %D.75820_373 to [0 x [1 x i8]]*
   %tmp147 = bitcast [0 x [1 x i8]]* %tmp146 to [1 x i8]*
-  %D.75853_393 = getelementptr inbounds [1 x i8]* %tmp147, i64 %D.75852_392
+  %D.75853_393 = getelementptr inbounds [1 x i8], [1 x i8]* %tmp147, i64 %D.75852_392
   call void bitcast (void (%struct.__st_parameter_dt*, i8*, i32)* @_gfortran_transfer_character_write to void (%struct.__st_parameter_dt*, [1 x i8]*, i32)*)(%struct.__st_parameter_dt* %memtmp3, [1 x i8]* %D.75853_393, i32 1) nounwind
 ; CHECK: @_gfortran_transfer_character_write
   %D.75833_394 = load i8** getelementptr inbounds (%"struct.array4_integer(kind=4).73"* @__main1_MOD_mxdate, i64 0, i32 0), align 8
@@ -222,7 +222,7 @@ codeRepl80.exitStub:                              ; preds = %"<bb 34>"
   %D.75856_413 = add nsw i64 %D.75855_411, %D.75843_412
   %tmp148 = bitcast i8* %D.75833_394 to [0 x i32]*
   %tmp149 = bitcast [0 x i32]* %tmp148 to i32*
-  %D.75857_414 = getelementptr inbounds i32* %tmp149, i64 %D.75856_413
+  %D.75857_414 = getelementptr inbounds i32, i32* %tmp149, i64 %D.75856_413
   call void bitcast (void (%struct.__st_parameter_dt*, i8*, i32)* @_gfortran_transfer_integer_write to void (%struct.__st_parameter_dt*, i32*, i32)*)(%struct.__st_parameter_dt* %memtmp3, i32* %D.75857_414, i32 4) nounwind
 ; CHECK: @_gfortran_transfer_integer_write
   call void bitcast (void (%struct.__st_parameter_dt*, i8*, i32)* @_gfortran_transfer_real_write to void (%struct.__st_parameter_dt*, float*, i32)*)(%struct.__st_parameter_dt* %memtmp3, float* @xr2.4593, i32 4) nounwind