1 ; Test that the puts 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 @empty = constant [1 x i8] zeroinitializer 8 9 declare i32 @puts(i8*) 10 11 ; Check puts("") -> putchar('\n'). 12 13 define void @test_simplify1() { 14 ; CHECK-LABEL: @test_simplify1( 15 %str = getelementptr [1 x i8], [1 x i8]* @empty, i32 0, i32 0 16 call i32 @puts(i8* %str) 17 ; CHECK-NEXT: call i32 @putchar(i32 10) 18 ret void 19 ; CHECK-NEXT: ret void 20 } 21 22 ; Don't simplify if the return value is used. 23 24 define i32 @test_no_simplify1() { 25 ; CHECK-LABEL: @test_no_simplify1( 26 %str = getelementptr [1 x i8], [1 x i8]* @empty, i32 0, i32 0 27 %ret = call i32 @puts(i8* %str) 28 ; CHECK-NEXT: call i32 @puts(i8* getelementptr inbounds ([1 x i8], [1 x i8]* @empty, i32 0, i32 0)) 29 ret i32 %ret 30 ; CHECK-NEXT: ret i32 %ret 31 } 32
