mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-21 18:29:45 +00:00
7c9c6ed761
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
73 lines
2.2 KiB
LLVM
73 lines
2.2 KiB
LLVM
; Test that the memcmp library call simplifier works correctly.
|
|
;
|
|
; RUN: opt < %s -instcombine -S | FileCheck %s
|
|
|
|
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
|
|
|
|
@foo = constant [4 x i8] c"foo\00"
|
|
@hel = constant [4 x i8] c"hel\00"
|
|
@hello_u = constant [8 x i8] c"hello_u\00"
|
|
|
|
declare i32 @memcmp(i8*, i8*, i32)
|
|
|
|
; Check memcmp(mem, mem, size) -> 0.
|
|
|
|
define i32 @test_simplify1(i8* %mem, i32 %size) {
|
|
; CHECK-LABEL: @test_simplify1(
|
|
%ret = call i32 @memcmp(i8* %mem, i8* %mem, i32 %size)
|
|
ret i32 %ret
|
|
; CHECK: ret i32 0
|
|
}
|
|
|
|
; Check memcmp(mem1, mem2, 0) -> 0.
|
|
|
|
define i32 @test_simplify2(i8* %mem1, i8* %mem2) {
|
|
; CHECK-LABEL: @test_simplify2(
|
|
%ret = call i32 @memcmp(i8* %mem1, i8* %mem2, i32 0)
|
|
ret i32 %ret
|
|
; CHECK: ret i32 0
|
|
}
|
|
|
|
;; Check memcmp(mem1, mem2, 1) -> *(unsigned char*)mem1 - *(unsigned char*)mem2.
|
|
|
|
define i32 @test_simplify3(i8* %mem1, i8* %mem2) {
|
|
; CHECK-LABEL: @test_simplify3(
|
|
%ret = call i32 @memcmp(i8* %mem1, i8* %mem2, i32 1)
|
|
; CHECK: [[LOAD1:%[a-z]+]] = load i8, i8* %mem1, align 1
|
|
; CHECK: [[ZEXT1:%[a-z]+]] = zext i8 [[LOAD1]] to i32
|
|
; CHECK: [[LOAD2:%[a-z]+]] = load i8, i8* %mem2, align 1
|
|
; CHECK: [[ZEXT2:%[a-z]+]] = zext i8 [[LOAD2]] to i32
|
|
; CHECK: [[RET:%[a-z]+]] = sub nsw i32 [[ZEXT1]], [[ZEXT2]]
|
|
ret i32 %ret
|
|
; CHECK: ret i32 [[RET]]
|
|
}
|
|
|
|
; Check memcmp(mem1, mem2, size) -> cnst, where all arguments are constants.
|
|
|
|
define i32 @test_simplify4() {
|
|
; CHECK-LABEL: @test_simplify4(
|
|
%mem1 = getelementptr [4 x i8], [4 x i8]* @hel, i32 0, i32 0
|
|
%mem2 = getelementptr [8 x i8], [8 x i8]* @hello_u, i32 0, i32 0
|
|
%ret = call i32 @memcmp(i8* %mem1, i8* %mem2, i32 3)
|
|
ret i32 %ret
|
|
; CHECK: ret i32 0
|
|
}
|
|
|
|
define i32 @test_simplify5() {
|
|
; CHECK-LABEL: @test_simplify5(
|
|
%mem1 = getelementptr [4 x i8], [4 x i8]* @hel, i32 0, i32 0
|
|
%mem2 = getelementptr [4 x i8], [4 x i8]* @foo, i32 0, i32 0
|
|
%ret = call i32 @memcmp(i8* %mem1, i8* %mem2, i32 3)
|
|
ret i32 %ret
|
|
; CHECK: ret i32 1
|
|
}
|
|
|
|
define i32 @test_simplify6() {
|
|
; CHECK-LABEL: @test_simplify6(
|
|
%mem1 = getelementptr [4 x i8], [4 x i8]* @foo, i32 0, i32 0
|
|
%mem2 = getelementptr [4 x i8], [4 x i8]* @hel, i32 0, i32 0
|
|
%ret = call i32 @memcmp(i8* %mem1, i8* %mem2, i32 3)
|
|
ret i32 %ret
|
|
; CHECK: ret i32 -1
|
|
}
|