1 ; Test that the fputs library call simplifier works correctly. 2 ; 3 ; RUN: opt < %s -instcombine -S | FileCheck %s 4 5 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" 6 7 %FILE = type { } 8 9 @empty = constant [1 x i8] zeroinitializer 10 @A = constant [2 x i8] c"A\00" 11 @hello = constant [7 x i8] c"hello\0A\00" 12 13 declare i32 @fputs(i8*, %FILE*) 14 15 ; Check fputs(str, fp) --> fwrite(str, 1, strlen(s), fp). 16 17 define void @test_simplify1(%FILE* %fp) { 18 ; CHECK-LABEL: @test_simplify1( 19 %str = getelementptr [1 x i8]* @empty, i32 0, i32 0 20 call i32 @fputs(i8* %str, %FILE* %fp) 21 ret void 22 ; CHECK-NEXT: ret void 23 } 24 25 ; NOTE: The fwrite simplifier simplifies this further to fputc. 26 27 define void @test_simplify2(%FILE* %fp) { 28 ; CHECK-LABEL: @test_simplify2( 29 %str = getelementptr [2 x i8]* @A, i32 0, i32 0 30 call i32 @fputs(i8* %str, %FILE* %fp) 31 ; CHECK-NEXT: call i32 @fputc(i32 65, %FILE* %fp) 32 ret void 33 ; CHECK-NEXT: ret void 34 } 35 36 define void @test_simplify3(%FILE* %fp) { 37 ; CHECK-LABEL: @test_simplify3( 38 %str = getelementptr [7 x i8]* @hello, i32 0, i32 0 39 call i32 @fputs(i8* %str, %FILE* %fp) 40 ; CHECK-NEXT: call i32 @fwrite(i8* getelementptr inbounds ([7 x i8]* @hello, i32 0, i32 0), i32 6, i32 1, %FILE* %fp) 41 ret void 42 ; CHECK-NEXT: ret void 43 } 44
