blob: ef4e1bbd824c05de04832bc8dd980d6744e3f670 [file] [log] [blame]
; Test that the puts library call simplifier works correctly.
;
; RUN: opt < %s -instcombine -S | FileCheck %s
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"
@empty = constant [1 x i8] zeroinitializer
declare i32 @puts(i8*)
; Check puts("") -> putchar('\n').
define void @test_simplify1() {
; CHECK: @test_simplify1
%str = getelementptr [1 x i8]* @empty, i32 0, i32 0
call i32 @puts(i8* %str)
; CHECK-NEXT: call i32 @putchar(i32 10)
ret void
; CHECK-NEXT: ret void
}
; Don't simplify if the return value is used.
define i32 @test_no_simplify1() {
; CHECK: @test_no_simplify1
%str = getelementptr [1 x i8]* @empty, i32 0, i32 0
%ret = call i32 @puts(i8* %str)
; CHECK-NEXT: call i32 @puts(i8* getelementptr inbounds ([1 x i8]* @empty, i32 0, i32 0))
ret i32 %ret
; CHECK-NEXT: ret i32 %ret
}