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1; Test that the fwrite library call simplifier works correctly.2;3; RUN: opt < %s -passes=instcombine -S | FileCheck %s4 5target datalayout = "e-p:64:64:64"6 7%FILE = type { }8 9@str = constant [1 x i8] zeroinitializer10@empty = constant [0 x i8] zeroinitializer11 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 void21; CHECK-NEXT: ret void22}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 void28; CHECK-NEXT: ret void29}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 void35; CHECK-NEXT: ret void36}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 @fwrite42 ret i64 %ret43; CHECK-NEXT: ret i64 %ret44}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 @fwrite50 ret void51; CHECK-NEXT: ret void52}53