mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-16 11:30:51 +00:00
5a70dd1d82
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:])
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@232184 91177308-0d34-0410-b5e6-96231b3b80d8
41 lines
1.2 KiB
LLVM
41 lines
1.2 KiB
LLVM
; RUN: opt -S < %s -instcombine | FileCheck %s
|
|
|
|
target datalayout = "e-p1:16:16-p2:32:32-p3:64:64"
|
|
|
|
@G1 = global i32 42, align 1
|
|
@G2 = global i32 42
|
|
@G3 = global [4 x i8] zeroinitializer, align 1
|
|
|
|
@A1 = alias bitcast (i8* getelementptr inbounds ([4 x i8], [4 x i8]* @G3, i32 0, i32 2) to i32*)
|
|
@A2 = alias inttoptr (i64 and (i64 ptrtoint (i8* getelementptr inbounds ([4 x i8], [4 x i8]* @G3, i32 0, i32 3) to i64), i64 -4) to i32*)
|
|
|
|
define i64 @f1() {
|
|
; This cannot be constant folded because G1 is underaligned.
|
|
; CHECK-LABEL: @f1(
|
|
; CHECK: ret i64 and
|
|
ret i64 and (i64 ptrtoint (i32* @G1 to i64), i64 1)
|
|
}
|
|
|
|
define i64 @f2() {
|
|
; The preferred alignment for G2 allows this one to foled to zero.
|
|
; CHECK-LABEL: @f2(
|
|
; CHECK: ret i64 0
|
|
ret i64 and (i64 ptrtoint (i32* @G2 to i64), i64 1)
|
|
}
|
|
|
|
define i64 @g1() {
|
|
; This cannot be constant folded because A1 aliases G3 which is underalaigned.
|
|
; CHECK-LABEL: @g1(
|
|
; CHECK: ret i64 and
|
|
ret i64 and (i64 ptrtoint (i32* @A1 to i64), i64 1)
|
|
}
|
|
|
|
define i64 @g2() {
|
|
; While A2 also aliases G3 which is underaligned, the math of A2 forces a
|
|
; certain alignment allowing this to fold to zero.
|
|
; CHECK-LABEL: @g2(
|
|
; CHECK: ret i64 0
|
|
ret i64 and (i64 ptrtoint (i32* @A2 to i64), i64 1)
|
|
}
|
|
|