llvm-6502/test/Transforms/LowerAtomic/atomic-swap.ll
David Blaikie 7c9c6ed761 [opaque pointer type] Add textual IR support for explicit type parameter to load instruction
Essentially the same as the GEP change in r230786.

A similar migration script can be used to update test cases, though a few more
test case improvements/changes were required this time around: (r229269-r229278)

import fileinput
import sys
import re

pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)")

for line in sys.stdin:
  sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line))

Reviewers: rafael, dexonsmith, grosser

Differential Revision: http://reviews.llvm.org/D7649

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230794 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-27 21:17:42 +00:00

29 lines
943 B
LLVM

; RUN: opt < %s -loweratomic -S | FileCheck %s
define i8 @cmpswap() {
; CHECK-LABEL: @cmpswap(
%i = alloca i8
%pair = cmpxchg i8* %i, i8 0, i8 42 monotonic monotonic
%j = extractvalue { i8, i1 } %pair, 0
; CHECK: [[OLDVAL:%[a-z0-9]+]] = load i8, i8* [[ADDR:%[a-z0-9]+]]
; CHECK-NEXT: [[SAME:%[a-z0-9]+]] = icmp eq i8 [[OLDVAL]], 0
; CHECK-NEXT: [[TO_STORE:%[a-z0-9]+]] = select i1 [[SAME]], i8 42, i8 [[OLDVAL]]
; CHECK-NEXT: store i8 [[TO_STORE]], i8* [[ADDR]]
; CHECK-NEXT: [[TMP:%[a-z0-9]+]] = insertvalue { i8, i1 } undef, i8 [[OLDVAL]], 0
; CHECK-NEXT: [[RES:%[a-z0-9]+]] = insertvalue { i8, i1 } [[TMP]], i1 [[SAME]], 1
; CHECK-NEXT: [[VAL:%[a-z0-9]+]] = extractvalue { i8, i1 } [[RES]], 0
ret i8 %j
; CHECK: ret i8 [[VAL]]
}
define i8 @swap() {
; CHECK-LABEL: @swap(
%i = alloca i8
%j = atomicrmw xchg i8* %i, i8 42 monotonic
; CHECK: [[INST:%[a-z0-9]+]] = load
; CHECK-NEXT: store
ret i8 %j
; CHECK: ret i8 [[INST]]
}