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llvm-mirror/test/CodeGen/X86/lea-recursion.ll
David Blaikie 3ea2df7c7b [opaque pointer type] Add textual IR support for explicit type parameter to gep operator
Similar to gep (r230786) and load (r230794) changes.

Similar migration script can be used to update test cases, which
successfully migrated all of LLVM and Polly, but about 4 test cases
needed manually changes in Clang.

(this script will read the contents of stdin and massage it into stdout
- wrap it in the 'apply.sh' script shown in previous commits + xargs to
apply it over a large set of test cases)

import fileinput
import sys
import re

rep = re.compile(r"(getelementptr(?:\s+inbounds)?\s*\()((<\d*\s+x\s+)?([^@]*?)(|\s*addrspace\(\d+\))\s*\*(?(3)>)\s*)(?=$|%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|zeroinitializer|<|\[\[[a-zA-Z]|\{\{)", re.MULTILINE | re.DOTALL)

def conv(match):
  line = match.group(1)
  line += match.group(4)
  line += ", "
  line += match.group(2)
  return line

line = sys.stdin.read()
off = 0
for match in re.finditer(rep, line):
  sys.stdout.write(line[off:match.start()])
  sys.stdout.write(conv(match))
  off = match.end()
sys.stdout.write(line[off:])

llvm-svn: 232184
2015-03-13 18:20:45 +00:00

47 lines
2.8 KiB
LLVM

; RUN: llc < %s -march=x86-64 | grep lea | count 13
; This testcase was written to demonstrate an instruction-selection problem,
; however it also happens to expose a limitation in the DAGCombiner's
; expression reassociation which causes it to miss opportunities for
; constant folding due to the intermediate adds having multiple uses.
; The Reassociate pass has similar limitations. If these limitations are
; fixed, the test commands above will need to be updated to expect fewer
; lea instructions.
@g0 = weak global [1000 x i32] zeroinitializer, align 32 ; <[1000 x i32]*> [#uses=8]
@g1 = weak global [1000 x i32] zeroinitializer, align 32 ; <[1000 x i32]*> [#uses=7]
define void @foo() {
entry:
%tmp4 = load i32, i32* getelementptr ([1000 x i32], [1000 x i32]* @g0, i32 0, i32 0) ; <i32> [#uses=1]
%tmp8 = load i32, i32* getelementptr ([1000 x i32], [1000 x i32]* @g1, i32 0, i32 0) ; <i32> [#uses=1]
%tmp9 = add i32 %tmp4, 1 ; <i32> [#uses=1]
%tmp10 = add i32 %tmp9, %tmp8 ; <i32> [#uses=2]
store i32 %tmp10, i32* getelementptr ([1000 x i32], [1000 x i32]* @g0, i32 0, i32 1)
%tmp8.1 = load i32, i32* getelementptr ([1000 x i32], [1000 x i32]* @g1, i32 0, i32 1) ; <i32> [#uses=1]
%tmp9.1 = add i32 %tmp10, 1 ; <i32> [#uses=1]
%tmp10.1 = add i32 %tmp9.1, %tmp8.1 ; <i32> [#uses=2]
store i32 %tmp10.1, i32* getelementptr ([1000 x i32], [1000 x i32]* @g0, i32 0, i32 2)
%tmp8.2 = load i32, i32* getelementptr ([1000 x i32], [1000 x i32]* @g1, i32 0, i32 2) ; <i32> [#uses=1]
%tmp9.2 = add i32 %tmp10.1, 1 ; <i32> [#uses=1]
%tmp10.2 = add i32 %tmp9.2, %tmp8.2 ; <i32> [#uses=2]
store i32 %tmp10.2, i32* getelementptr ([1000 x i32], [1000 x i32]* @g0, i32 0, i32 3)
%tmp8.3 = load i32, i32* getelementptr ([1000 x i32], [1000 x i32]* @g1, i32 0, i32 3) ; <i32> [#uses=1]
%tmp9.3 = add i32 %tmp10.2, 1 ; <i32> [#uses=1]
%tmp10.3 = add i32 %tmp9.3, %tmp8.3 ; <i32> [#uses=2]
store i32 %tmp10.3, i32* getelementptr ([1000 x i32], [1000 x i32]* @g0, i32 0, i32 4)
%tmp8.4 = load i32, i32* getelementptr ([1000 x i32], [1000 x i32]* @g1, i32 0, i32 4) ; <i32> [#uses=1]
%tmp9.4 = add i32 %tmp10.3, 1 ; <i32> [#uses=1]
%tmp10.4 = add i32 %tmp9.4, %tmp8.4 ; <i32> [#uses=2]
store i32 %tmp10.4, i32* getelementptr ([1000 x i32], [1000 x i32]* @g0, i32 0, i32 5)
%tmp8.5 = load i32, i32* getelementptr ([1000 x i32], [1000 x i32]* @g1, i32 0, i32 5) ; <i32> [#uses=1]
%tmp9.5 = add i32 %tmp10.4, 1 ; <i32> [#uses=1]
%tmp10.5 = add i32 %tmp9.5, %tmp8.5 ; <i32> [#uses=2]
store i32 %tmp10.5, i32* getelementptr ([1000 x i32], [1000 x i32]* @g0, i32 0, i32 6)
%tmp8.6 = load i32, i32* getelementptr ([1000 x i32], [1000 x i32]* @g1, i32 0, i32 6) ; <i32> [#uses=1]
%tmp9.6 = add i32 %tmp10.5, 1 ; <i32> [#uses=1]
%tmp10.6 = add i32 %tmp9.6, %tmp8.6 ; <i32> [#uses=1]
store i32 %tmp10.6, i32* getelementptr ([1000 x i32], [1000 x i32]* @g0, i32 0, i32 7)
ret void
}