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1; RUN: opt -passes=instcombine -S %s | FileCheck %s2 3; The intent of this test is to check that the declarations produces for4; libcalls retains the inreg parameter attribute.5 6target datalayout = "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-f64:32:64-f80:32-n8:16:32-S128"7target triple = "i386-unknown-linux-gnu"8 9declare ptr @foo()10declare i32 @memcmp(ptr inreg captures(none) noundef, ptr inreg captures(none) noundef, i32 inreg noundef)11declare i32 @printf(ptr, ...)12declare double @exp2(double)13declare i32 @__sprintf_chk(ptr, i32, i32, ptr, ...)14@a = common global [60 x i8] zeroinitializer, align 115@b = common global [60 x i8] zeroinitializer, align 116@h = constant [2 x i8] c"h\00"17 18; CHECK: declare i32 @bcmp(ptr inreg captures(none), ptr inreg captures(none), i32 inreg)19; CHECK-NOT: declare i32 @bcmp(ptr captures(none), ptr captures(none), i32)20 21define i32 @baz(ptr inreg noundef %s2, i32 inreg noundef %n){22 %call = call ptr @foo()23 %call1 = call i32 @memcmp(ptr inreg noundef %call, ptr inreg noundef %s2, i32 inreg noundef %n)24 %cmp = icmp eq i32 %call1, 025 %conv = zext i1 %cmp to i3226 ret i32 %conv27}28 29; CHECK: declare noundef i32 @putchar(i32 inreg noundef)30; CHECK-NOT: declare noundef i32 @putchar(i32 noundef)31 32define void @test_fewer_params_than_num_register_parameters() {33 call i32 (ptr, ...) @printf(ptr @h)34 ret void35}36 37; CHECK: declare double @ldexp(double, i32 inreg)38; CHECK-NOT: declare double @ldexp(double, i32)39 40define double @test_non_int_params(i16 signext %x) {41 %conv = sitofp i16 %x to double42 %ret = call double @exp2(double %conv)43 ret double %ret44}45 46; CHECK: declare noundef i32 @sprintf(ptr noalias noundef writeonly captures(none), ptr noundef readonly captures(none), ...)47; CHECK-NOT: declare noundef i32 @sprintf(ptr inreg noalias noundef writeonly captures(none), ptr inreg noundef readonly captures(none), ...)48define i32 @test_variadic() {49 %ret = call i32 (ptr, i32, i32, ptr, ...) @__sprintf_chk(ptr @a, i32 0, i32 -1, ptr @b)50 ret i32 %ret51}52 53!llvm.module.flags = !{!0}54!0 = !{i32 1, !"NumRegisterParameters", i32 3}55