1; Test that the printf library call simplifier works correctly.
2;
3; RUN: opt < %s -instcombine -S | FileCheck %s
4
5target 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"
6
7@hello_world = constant [13 x i8] c"hello world\0A\00"
8@h = constant [2 x i8] c"h\00"
9@percent_s = constant [4 x i8] c"%s\0A\00"
10
11declare void @printf(i8*, ...)
12
13; Check simplification of printf with void return type.
14
15define void @test_simplify1() {
16; CHECK-LABEL: @test_simplify1(
17  %fmt = getelementptr [2 x i8]* @h, i32 0, i32 0
18  call void (i8*, ...)* @printf(i8* %fmt)
19; CHECK-NEXT: call i32 @putchar(i32 104)
20  ret void
21; CHECK-NEXT: ret void
22}
23
24define void @test_simplify2() {
25; CHECK-LABEL: @test_simplify2(
26  %fmt = getelementptr [13 x i8]* @hello_world, i32 0, i32 0
27  call void (i8*, ...)* @printf(i8* %fmt)
28; CHECK-NEXT: call i32 @puts(i8* getelementptr inbounds ([12 x i8]* @str, i32 0, i32 0))
29  ret void
30; CHECK-NEXT: ret void
31}
32
33define void @test_simplify6() {
34; CHECK-LABEL: @test_simplify6(
35  %fmt = getelementptr [4 x i8]* @percent_s, i32 0, i32 0
36  %str = getelementptr [13 x i8]* @hello_world, i32 0, i32 0
37  call void (i8*, ...)* @printf(i8* %fmt, i8* %str)
38; CHECK-NEXT: call i32 @puts(i8* getelementptr inbounds ([13 x i8]* @hello_world, i32 0, i32 0))
39  ret void
40; CHECK-NEXT: ret void
41}
42