1; Test that the puts 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@empty = constant [1 x i8] zeroinitializer 8 9declare i32 @puts(i8*) 10 11; Check puts("") -> putchar('\n'). 12 13define 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 24define 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