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llvm-mirror/test/Transforms/IndVarSimplify/backedge-on-min-max.ll
David Blaikie 0d99339102 [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
2015-02-27 19:29:02 +00:00

454 lines
11 KiB
LLVM
Raw Blame History

; RUN: opt < %s -indvars -S | FileCheck %s
;; --- signed ---
define void @min.signed.1(i32* %a, i32 %a_len, i32 %n) {
; CHECK-LABEL: @min.signed.1
entry:
%smin.cmp = icmp slt i32 %a_len, %n
%smin = select i1 %smin.cmp, i32 %a_len, i32 %n
%entry.cond = icmp slt i32 0, %smin
br i1 %entry.cond, label %loop, label %exit
loop:
%idx = phi i32 [ 0, %entry ], [ %idx.inc, %latch ]
%idx.inc = add i32 %idx, 1
%in.bounds = icmp slt i32 %idx, %a_len
br i1 %in.bounds, label %ok, label %latch
; CHECK: br i1 true, label %ok, label %latch
ok:
%addr = getelementptr i32, i32* %a, i32 %idx
store i32 %idx, i32* %addr
br label %latch
latch:
%be.cond = icmp slt i32 %idx.inc, %smin
br i1 %be.cond, label %loop, label %exit
exit:
ret void
}
define void @min.signed.2(i32* %a, i32 %a_len, i32 %n) {
; CHECK-LABEL: @min.signed.2
entry:
%smin.cmp = icmp slt i32 %a_len, %n
%smin = select i1 %smin.cmp, i32 %a_len, i32 %n
%entry.cond = icmp slt i32 0, %smin
br i1 %entry.cond, label %loop, label %exit
loop:
%idx = phi i32 [ 0, %entry ], [ %idx.inc, %latch ]
%idx.inc = add i32 %idx, 1
%in.bounds = icmp sgt i32 %a_len, %idx
br i1 %in.bounds, label %ok, label %latch
; CHECK: br i1 true, label %ok, label %latch
ok:
%addr = getelementptr i32, i32* %a, i32 %idx
store i32 %idx, i32* %addr
br label %latch
latch:
%be.cond = icmp slt i32 %idx.inc, %smin
br i1 %be.cond, label %loop, label %exit
exit:
ret void
}
define void @min.signed.3(i32* %a, i32 %n) {
; CHECK-LABEL: @min.signed.3
entry:
%smin.cmp = icmp slt i32 42, %n
%smin = select i1 %smin.cmp, i32 42, i32 %n
%entry.cond = icmp slt i32 0, %smin
br i1 %entry.cond, label %loop, label %exit
loop:
%idx = phi i32 [ 0, %entry ], [ %idx.inc, %latch ]
%idx.inc = add i32 %idx, 1
%in.bounds = icmp slt i32 %idx, 42
br i1 %in.bounds, label %ok, label %latch
; CHECK: br i1 true, label %ok, label %latch
ok:
%addr = getelementptr i32, i32* %a, i32 %idx
store i32 %idx, i32* %addr
br label %latch
latch:
%be.cond = icmp slt i32 %idx.inc, %smin
br i1 %be.cond, label %loop, label %exit
exit:
ret void
}
define void @min.signed.4(i32* %a, i32 %n) {
; CHECK-LABEL: @min.signed.4
entry:
%smin.cmp = icmp slt i32 42, %n
%smin = select i1 %smin.cmp, i32 42, i32 %n
%entry.cond = icmp slt i32 0, %smin
br i1 %entry.cond, label %loop, label %exit
loop:
%idx = phi i32 [ 0, %entry ], [ %idx.inc, %latch ]
%idx.inc = add i32 %idx, 1
%in.bounds = icmp sgt i32 42, %idx
br i1 %in.bounds, label %ok, label %latch
; CHECK: br i1 true, label %ok, label %latch
ok:
%addr = getelementptr i32, i32* %a, i32 %idx
store i32 %idx, i32* %addr
br label %latch
latch:
%be.cond = icmp slt i32 %idx.inc, %smin
br i1 %be.cond, label %loop, label %exit
exit:
ret void
}
define void @max.signed.1(i32* %a, i32 %a_len, i32 %n) {
; CHECK-LABEL: @max.signed.1
entry:
%smax.cmp = icmp sgt i32 %a_len, %n
%smax = select i1 %smax.cmp, i32 %a_len, i32 %n
%entry.cond = icmp sgt i32 0, %smax
br i1 %entry.cond, label %loop, label %exit
loop:
%idx = phi i32 [ 0, %entry ], [ %idx.inc, %latch ]
%idx.inc = add i32 %idx, 1
%in.bounds = icmp sgt i32 %idx, %a_len
br i1 %in.bounds, label %ok, label %latch
; CHECK: br i1 true, label %ok, label %latch
ok:
%addr = getelementptr i32, i32* %a, i32 %idx
store i32 %idx, i32* %addr
br label %latch
latch:
%be.cond = icmp sgt i32 %idx.inc, %smax
br i1 %be.cond, label %loop, label %exit
exit:
ret void
}
define void @max.signed.2(i32* %a, i32 %a_len, i32 %n) {
; CHECK-LABEL: @max.signed.2
entry:
%smax.cmp = icmp sgt i32 %a_len, %n
%smax = select i1 %smax.cmp, i32 %a_len, i32 %n
%entry.cond = icmp sgt i32 0, %smax
br i1 %entry.cond, label %loop, label %exit
loop:
%idx = phi i32 [ 0, %entry ], [ %idx.inc, %latch ]
%idx.inc = add i32 %idx, 1
%in.bounds = icmp slt i32 %a_len, %idx
br i1 %in.bounds, label %ok, label %latch
; CHECK: br i1 true, label %ok, label %latch
ok:
%addr = getelementptr i32, i32* %a, i32 %idx
store i32 %idx, i32* %addr
br label %latch
latch:
%be.cond = icmp sgt i32 %idx.inc, %smax
br i1 %be.cond, label %loop, label %exit
exit:
ret void
}
define void @max.signed.3(i32* %a, i32 %n, i32 %init) {
; CHECK-LABEL: @max.signed.3
entry:
%smax.cmp = icmp sgt i32 42, %n
%smax = select i1 %smax.cmp, i32 42, i32 %n
%entry.cond = icmp sgt i32 %init, %smax
br i1 %entry.cond, label %loop, label %exit
loop:
%idx = phi i32 [ %init, %entry ], [ %idx.inc, %latch ]
%idx.inc = add i32 %idx, 1
%in.bounds = icmp sgt i32 %idx, 42
br i1 %in.bounds, label %ok, label %latch
; CHECK: br i1 true, label %ok, label %latch
ok:
%addr = getelementptr i32, i32* %a, i32 %idx
store i32 %idx, i32* %addr
br label %latch
latch:
%be.cond = icmp sgt i32 %idx.inc, %smax
br i1 %be.cond, label %loop, label %exit
exit:
ret void
}
define void @max.signed.4(i32* %a, i32 %n, i32 %init) {
; CHECK-LABEL: @max.signed.4
entry:
%smax.cmp = icmp sgt i32 42, %n
%smax = select i1 %smax.cmp, i32 42, i32 %n
%entry.cond = icmp sgt i32 %init, %smax
br i1 %entry.cond, label %loop, label %exit
loop:
%idx = phi i32 [ %init, %entry ], [ %idx.inc, %latch ]
%idx.inc = add i32 %idx, 1
%in.bounds = icmp slt i32 42, %idx
br i1 %in.bounds, label %ok, label %latch
; CHECK: br i1 true, label %ok, label %latch
ok:
%addr = getelementptr i32, i32* %a, i32 %idx
store i32 %idx, i32* %addr
br label %latch
latch:
%be.cond = icmp sgt i32 %idx.inc, %smax
br i1 %be.cond, label %loop, label %exit
exit:
ret void
}
;; --- unsigned ---
define void @min.unsigned.1(i32* %a, i32 %a_len, i32 %n) {
; CHECK-LABEL: @min.unsigned.1
entry:
%umin.cmp = icmp ult i32 %a_len, %n
%umin = select i1 %umin.cmp, i32 %a_len, i32 %n
%entry.cond = icmp ult i32 5, %umin
br i1 %entry.cond, label %loop, label %exit
loop:
%idx = phi i32 [ 5, %entry ], [ %idx.inc, %latch ]
%idx.inc = add i32 %idx, 1
%in.bounds = icmp ult i32 %idx, %a_len
br i1 %in.bounds, label %ok, label %latch
; CHECK: br i1 true, label %ok, label %latch
ok:
%addr = getelementptr i32, i32* %a, i32 %idx
store i32 %idx, i32* %addr
br label %latch
latch:
%be.cond = icmp ult i32 %idx.inc, %umin
br i1 %be.cond, label %loop, label %exit
exit:
ret void
}
define void @min.unsigned.2(i32* %a, i32 %a_len, i32 %n) {
; CHECK-LABEL: @min.unsigned.2
entry:
%umin.cmp = icmp ult i32 %a_len, %n
%umin = select i1 %umin.cmp, i32 %a_len, i32 %n
%entry.cond = icmp ult i32 5, %umin
br i1 %entry.cond, label %loop, label %exit
loop:
%idx = phi i32 [ 5, %entry ], [ %idx.inc, %latch ]
%idx.inc = add i32 %idx, 1
%in.bounds = icmp ugt i32 %a_len, %idx
br i1 %in.bounds, label %ok, label %latch
; CHECK: br i1 true, label %ok, label %latch
ok:
%addr = getelementptr i32, i32* %a, i32 %idx
store i32 %idx, i32* %addr
br label %latch
latch:
%be.cond = icmp ult i32 %idx.inc, %umin
br i1 %be.cond, label %loop, label %exit
exit:
ret void
}
define void @min.unsigned.3(i32* %a, i32 %n) {
; CHECK-LABEL: @min.unsigned.3
entry:
%umin.cmp = icmp ult i32 42, %n
%umin = select i1 %umin.cmp, i32 42, i32 %n
%entry.cond = icmp ult i32 5, %umin
br i1 %entry.cond, label %loop, label %exit
loop:
%idx = phi i32 [ 5, %entry ], [ %idx.inc, %latch ]
%idx.inc = add i32 %idx, 1
%in.bounds = icmp ult i32 %idx, 42
br i1 %in.bounds, label %ok, label %latch
; CHECK: br i1 true, label %ok, label %latch
ok:
%addr = getelementptr i32, i32* %a, i32 %idx
store i32 %idx, i32* %addr
br label %latch
latch:
%be.cond = icmp ult i32 %idx.inc, %umin
br i1 %be.cond, label %loop, label %exit
exit:
ret void
}
define void @min.unsigned.4(i32* %a, i32 %n) {
; CHECK-LABEL: @min.unsigned.4
entry:
%umin.cmp = icmp ult i32 42, %n
%umin = select i1 %umin.cmp, i32 42, i32 %n
%entry.cond = icmp ult i32 5, %umin
br i1 %entry.cond, label %loop, label %exit
loop:
%idx = phi i32 [ 5, %entry ], [ %idx.inc, %latch ]
%idx.inc = add i32 %idx, 1
%in.bounds = icmp ugt i32 42, %idx
br i1 %in.bounds, label %ok, label %latch
; CHECK: br i1 true, label %ok, label %latch
ok:
%addr = getelementptr i32, i32* %a, i32 %idx
store i32 %idx, i32* %addr
br label %latch
latch:
%be.cond = icmp ult i32 %idx.inc, %umin
br i1 %be.cond, label %loop, label %exit
exit:
ret void
}
define void @max.unsigned.1(i32* %a, i32 %a_len, i32 %n) {
; CHECK-LABEL: @max.unsigned.1
entry:
%umax.cmp = icmp ugt i32 %a_len, %n
%umax = select i1 %umax.cmp, i32 %a_len, i32 %n
%entry.cond = icmp ugt i32 5, %umax
br i1 %entry.cond, label %loop, label %exit
loop:
%idx = phi i32 [ 5, %entry ], [ %idx.inc, %latch ]
%idx.inc = add i32 %idx, 1
%in.bounds = icmp ugt i32 %idx, %a_len
br i1 %in.bounds, label %ok, label %latch
; CHECK: br i1 true, label %ok, label %latch
ok:
%addr = getelementptr i32, i32* %a, i32 %idx
store i32 %idx, i32* %addr
br label %latch
latch:
%be.cond = icmp ugt i32 %idx.inc, %umax
br i1 %be.cond, label %loop, label %exit
exit:
ret void
}
define void @max.unsigned.2(i32* %a, i32 %a_len, i32 %n) {
; CHECK-LABEL: @max.unsigned.2
entry:
%umax.cmp = icmp ugt i32 %a_len, %n
%umax = select i1 %umax.cmp, i32 %a_len, i32 %n
%entry.cond = icmp ugt i32 5, %umax
br i1 %entry.cond, label %loop, label %exit
loop:
%idx = phi i32 [ 5, %entry ], [ %idx.inc, %latch ]
%idx.inc = add i32 %idx, 1
%in.bounds = icmp ult i32 %a_len, %idx
br i1 %in.bounds, label %ok, label %latch
; CHECK: br i1 true, label %ok, label %latch
ok:
%addr = getelementptr i32, i32* %a, i32 %idx
store i32 %idx, i32* %addr
br label %latch
latch:
%be.cond = icmp ugt i32 %idx.inc, %umax
br i1 %be.cond, label %loop, label %exit
exit:
ret void
}
define void @max.unsigned.3(i32* %a, i32 %n, i32 %init) {
; CHECK-LABEL: @max.unsigned.3
entry:
%umax.cmp = icmp ugt i32 42, %n
%umax = select i1 %umax.cmp, i32 42, i32 %n
%entry.cond = icmp ugt i32 %init, %umax
br i1 %entry.cond, label %loop, label %exit
loop:
%idx = phi i32 [ %init, %entry ], [ %idx.inc, %latch ]
%idx.inc = add i32 %idx, 1
%in.bounds = icmp ugt i32 %idx, 42
br i1 %in.bounds, label %ok, label %latch
; CHECK: br i1 true, label %ok, label %latch
ok:
%addr = getelementptr i32, i32* %a, i32 %idx
store i32 %idx, i32* %addr
br label %latch
latch:
%be.cond = icmp ugt i32 %idx.inc, %umax
br i1 %be.cond, label %loop, label %exit
exit:
ret void
}
define void @max.unsigned.4(i32* %a, i32 %n, i32 %init) {
; CHECK-LABEL: @max.unsigned.4
entry:
%umax.cmp = icmp ugt i32 42, %n
%umax = select i1 %umax.cmp, i32 42, i32 %n
%entry.cond = icmp ugt i32 %init, %umax
br i1 %entry.cond, label %loop, label %exit
loop:
%idx = phi i32 [ %init, %entry ], [ %idx.inc, %latch ]
%idx.inc = add i32 %idx, 1
%in.bounds = icmp ult i32 42, %idx
br i1 %in.bounds, label %ok, label %latch
; CHECK: br i1 true, label %ok, label %latch
ok:
%addr = getelementptr i32, i32* %a, i32 %idx
store i32 %idx, i32* %addr
br label %latch
latch:
%be.cond = icmp ugt i32 %idx.inc, %umax
br i1 %be.cond, label %loop, label %exit
exit:
ret void
}
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