1; Test that the fwrite library call simplifier works correctly. 2; 3; RUN: opt < %s -passes=instcombine -S | FileCheck %s 4 5target datalayout = "e-p:64:64:64" 6 7%FILE = type { } 8 9@str = constant [1 x i8] zeroinitializer 10@empty = constant [0 x i8] zeroinitializer 11 12declare i64 @fwrite(ptr, i64, i64, ptr) 13 14; Check fwrite(S, 1, 1, fp) -> fputc(S[0], fp). 15 16define void @test_simplify1(ptr %fp) { 17; CHECK-LABEL: @test_simplify1( 18 call i64 @fwrite(ptr @str, i64 1, i64 1, ptr %fp) 19; CHECK-NEXT: call i32 @fputc(i32 0, ptr %fp) 20 ret void 21; CHECK-NEXT: ret void 22} 23 24define void @test_simplify2(ptr %fp) { 25; CHECK-LABEL: @test_simplify2( 26 call i64 @fwrite(ptr @empty, i64 1, i64 0, ptr %fp) 27 ret void 28; CHECK-NEXT: ret void 29} 30 31define void @test_simplify3(ptr %fp) { 32; CHECK-LABEL: @test_simplify3( 33 call i64 @fwrite(ptr @empty, i64 0, i64 1, ptr %fp) 34 ret void 35; CHECK-NEXT: ret void 36} 37 38define i64 @test_no_simplify1(ptr %fp) { 39; CHECK-LABEL: @test_no_simplify1( 40 %ret = call i64 @fwrite(ptr @str, i64 1, i64 1, ptr %fp) 41; CHECK-NEXT: call i64 @fwrite 42 ret i64 %ret 43; CHECK-NEXT: ret i64 %ret 44} 45 46define void @test_no_simplify2(ptr %fp, i64 %size) { 47; CHECK-LABEL: @test_no_simplify2( 48 call i64 @fwrite(ptr @str, i64 %size, i64 1, ptr %fp) 49; CHECK-NEXT: call i64 @fwrite 50 ret void 51; CHECK-NEXT: ret void 52} 53