llvm/test/Transforms/InstCombine/sprintf-1.ll
David Blaikie 5a70dd1d82 [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:])

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@232184 91177308-0d34-0410-b5e6-96231b3b80d8
2015-03-13 18:20:45 +00:00

101 lines
3.9 KiB
LLVM

; Test that the sprintf library call simplifier works correctly.
;
; RUN: opt < %s -instcombine -S | FileCheck %s
; RUN: opt < %s -mtriple xcore-xmos-elf -instcombine -S | FileCheck %s -check-prefix=CHECK-IPRINTF
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"
@hello_world = constant [13 x i8] c"hello world\0A\00"
@null = constant [1 x i8] zeroinitializer
@null_hello = constant [7 x i8] c"\00hello\00"
@h = constant [2 x i8] c"h\00"
@percent_c = constant [3 x i8] c"%c\00"
@percent_d = constant [3 x i8] c"%d\00"
@percent_f = constant [3 x i8] c"%f\00"
@percent_s = constant [3 x i8] c"%s\00"
declare i32 @sprintf(i8*, i8*, ...)
; Check sprintf(dst, fmt) -> llvm.memcpy(str, fmt, strlen(fmt) + 1, 1).
define void @test_simplify1(i8* %dst) {
; CHECK-LABEL: @test_simplify1(
%fmt = getelementptr [13 x i8], [13 x i8]* @hello_world, i32 0, i32 0
call i32 (i8*, i8*, ...)* @sprintf(i8* %dst, i8* %fmt)
; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dst, i8* getelementptr inbounds ([13 x i8], [13 x i8]* @hello_world, i32 0, i32 0), i32 13, i32 1, i1 false)
ret void
; CHECK-NEXT: ret void
}
define void @test_simplify2(i8* %dst) {
; CHECK-LABEL: @test_simplify2(
%fmt = getelementptr [1 x i8], [1 x i8]* @null, i32 0, i32 0
call i32 (i8*, i8*, ...)* @sprintf(i8* %dst, i8* %fmt)
; CHECK-NEXT: store i8 0, i8* %dst, align 1
ret void
; CHECK-NEXT: ret void
}
define void @test_simplify3(i8* %dst) {
; CHECK-LABEL: @test_simplify3(
%fmt = getelementptr [7 x i8], [7 x i8]* @null_hello, i32 0, i32 0
call i32 (i8*, i8*, ...)* @sprintf(i8* %dst, i8* %fmt)
; CHECK-NEXT: store i8 0, i8* %dst, align 1
ret void
; CHECK-NEXT: ret void
}
; Check sprintf(dst, "%c", chr) -> *(i8*)dst = chr; *((i8*)dst + 1) = 0.
define void @test_simplify4(i8* %dst) {
; CHECK-LABEL: @test_simplify4(
%fmt = getelementptr [3 x i8], [3 x i8]* @percent_c, i32 0, i32 0
call i32 (i8*, i8*, ...)* @sprintf(i8* %dst, i8* %fmt, i8 104)
; CHECK-NEXT: store i8 104, i8* %dst, align 1
; CHECK-NEXT: [[NUL:%[a-z0-9]+]] = getelementptr i8, i8* %dst, i32 1
; CHECK-NEXT: store i8 0, i8* [[NUL]], align 1
ret void
; CHECK-NEXT: ret void
}
; Check sprintf(dst, "%s", str) -> llvm.memcpy(dest, str, strlen(str) + 1, 1).
define void @test_simplify5(i8* %dst, i8* %str) {
; CHECK-LABEL: @test_simplify5(
%fmt = getelementptr [3 x i8], [3 x i8]* @percent_s, i32 0, i32 0
call i32 (i8*, i8*, ...)* @sprintf(i8* %dst, i8* %fmt, i8* %str)
; CHECK-NEXT: [[STRLEN:%[a-z0-9]+]] = call i32 @strlen(i8* %str)
; CHECK-NEXT: [[LENINC:%[a-z0-9]+]] = add i32 [[STRLEN]], 1
; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dst, i8* %str, i32 [[LENINC]], i32 1, i1 false)
ret void
; CHECK-NEXT: ret void
}
; Check sprintf(dst, format, ...) -> siprintf(str, format, ...) if no floating.
define void @test_simplify6(i8* %dst) {
; CHECK-IPRINTF-LABEL: @test_simplify6(
%fmt = getelementptr [3 x i8], [3 x i8]* @percent_d, i32 0, i32 0
call i32 (i8*, i8*, ...)* @sprintf(i8* %dst, i8* %fmt, i32 187)
; CHECK-IPRINTF-NEXT: call i32 (i8*, i8*, ...)* @siprintf(i8* %dst, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @percent_d, i32 0, i32 0), i32 187)
ret void
; CHECK-IPRINTF-NEXT: ret void
}
define void @test_no_simplify1(i8* %dst) {
; CHECK-IPRINTF-LABEL: @test_no_simplify1(
%fmt = getelementptr [3 x i8], [3 x i8]* @percent_f, i32 0, i32 0
call i32 (i8*, i8*, ...)* @sprintf(i8* %dst, i8* %fmt, double 1.87)
; CHECK-IPRINTF-NEXT: call i32 (i8*, i8*, ...)* @sprintf(i8* %dst, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @percent_f, i32 0, i32 0), double 1.870000e+00)
ret void
; CHECK-IPRINTF-NEXT: ret void
}
define void @test_no_simplify2(i8* %dst, i8* %fmt, double %d) {
; CHECK-LABEL: @test_no_simplify2(
call i32 (i8*, i8*, ...)* @sprintf(i8* %dst, i8* %fmt, double %d)
; CHECK-NEXT: call i32 (i8*, i8*, ...)* @sprintf(i8* %dst, i8* %fmt, double %d)
ret void
; CHECK-NEXT: ret void
}