; REQUIRES: asserts ; RUN: opt -passes='cgscc(inline),instcombine,cgscc(inline)' -S -debug-only=inline -disable-output < %s 2>&1 | FileCheck %s ; This test shows that the recursive function will not get simplified ; unless the caller is the function itself, not another different caller. ; CHECK: Inlining calls in: test ; CHECK: Function size: 2 ; CHECK: NOT Inlining (cost=never): recursive, Call: %call = tail call float @inline_rec_true_successor(float %x, float %scale) ; CHECK: Inlining calls in: inline_rec_true_successor ; CHECK: Function size: 10 ; CHECK: Inlining (cost=-35, threshold=337), Call: %call = tail call float @inline_rec_true_successor(float %fneg, float %scale) ; CHECK: Size after inlining: 17 ; CHECK: NOT Inlining (cost=never): noinline function attribute, Call: %call_test = tail call float @test(float %fneg, float %common.ret18.op.i) ; CHECK: NOT Inlining (cost=never): noinline function attribute, Call: %call_test.i = tail call float @test(float %x, float %call.i) ; CHECK: Skipping inlining due to history: inline_rec_true_successor -> inline_rec_true_successor ; CHECK: Updated inlining SCC: (test, inline_rec_true_successor) ; CHECK: Inlining calls in: test ; CHECK: Function size: 2 ; CHECK: Inlining (cost=25, threshold=225), Call: %call = tail call float @inline_rec_true_successor(float %x, float %scale) ; CHECK: Size after inlining: 10 define float @test(float %x, float %scale) noinline { entry: %call = tail call float @inline_rec_true_successor(float %x, float %scale) ret float %call } define float @inline_rec_true_successor(float %x, float %scale) { entry: %cmp = fcmp olt float %x, 0.000000e+00 br i1 %cmp, label %if.then, label %if.end common.ret18: ; preds = %if.then, %if.end %common.ret18.op = phi float [ %call_test, %if.then ], [ %mul, %if.end ] ret float %common.ret18.op if.then: ; preds = %entry %fneg = fneg float %x %call = tail call float @inline_rec_true_successor(float %fneg, float %scale) %call_test = tail call float @test(float %fneg, float %call) br label %common.ret18 if.end: ; preds = %entry %mul = fmul float %x, %scale br label %common.ret18 }