1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; Test that the puts library call simplifier works correctly. 3; 4; RUN: opt < %s -passes=instcombine -S | FileCheck %s 5 6target 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" 7 8@empty = constant [1 x i8] zeroinitializer 9 10declare i32 @puts(ptr) 11 12; Check puts("") -> putchar('\n'). 13 14define void @test_simplify1() { 15; CHECK-LABEL: @test_simplify1( 16; CHECK-NEXT: [[PUTCHAR:%.*]] = call i32 @putchar(i32 10) 17; CHECK-NEXT: ret void 18; 19 call i32 @puts(ptr @empty) 20 ret void 21} 22 23; Don't simplify if the return value is used. 24 25define i32 @test_no_simplify1() { 26; CHECK-LABEL: @test_no_simplify1( 27; CHECK-NEXT: [[RET:%.*]] = call i32 @puts(ptr noundef nonnull dereferenceable(1) @empty) 28; CHECK-NEXT: ret i32 [[RET]] 29; 30 %ret = call i32 @puts(ptr @empty) 31 ret i32 %ret 32} 33